Promote Hair Growth Research Articles

Revitalizing Effect on the Scalp After Injection with a Mechanically Stabilized Hyaluronic Acid Complex in Subjects with Androgenetic Alopecia

Background: Treatments for androgenetic alopecia (AGA) include different drugs, but a treatment based on stabilized hyaluronic acid has not been tested. The aim of this study is to clinically evaluate the effect of six sessions of injections using a hyaluronic acid compound supplemented with vitamins, ions, and amino acids (CH) on hair density and quality in volunteers. Methods: For this purpose, twenty-six healthy volunteers of both sexes with moderate AGA were injected with 3 mL of CH using the micro-papule technique. All received six CH sessions at two-week intervals. Hair loss, hair thickness, and shine were assessed using macro-photographs. A follow-up questionnaire was given to the volunteers at 40 days and at 90 days after the last treatment to determine their level of satisfaction. In addition, a dermatological control was carried out to assess the tolerance of the treatment applied. Results: The results indicate that, after treatment with CH, there is a significant improvement in the thickness, shine, and density of scalp hair, and that the treatment significantly reduces hair loss on the scalp. On a dermatological level, the tolerability of the treatment was excellent with no complications observed. In total, 88.5% of the volunteers indicated that CH treatment improved their appearance. In summary, it can be said that CH treatment reduces hair loss and promotes hair growth. Conclusions: It is suggested that this treatment is effective in reducing the signs and symptoms of alopecia.

Formulation and Evaluation of Herbal Shampoo

The main object of this present study is to prepare and evaluate an herbal Shampoo and determine physiochemical function that emphasizes on safety, Efficacy and quality of the product Herbal Shampoo is the natural haircare product Which is use to remove grease, dirt, dandruff and promote hair growth. Strenthness and darkness of the hair. It is also supply softness, smoothness, and Shines for the hair. Various drugs are used for the pre mixture of cosmetics Shampoo. Such drugs shows different side effects such as hair loss, high scaling, Scratching, discomfort, nausea and headache. Therefore an experiment is made to prepare herbal shampoo that is free from side effects. (1) The aim of the present study is to Formulate and evaluate herbal Anti dandruff Shampoo containing natural ingredients with an Emphasis on safety and efficacy.(2).

MitoQ enhances CYP19A1 expression to stimulate WNT/β-catenin signaling pathway for promoting hair growth in androgenetic alopecia.

Increased sensitivity to androgens and androgen receptors is the underlying cause of androgenetic alopecia (AGA), a hereditary disease. Our study investigated the preventive effects of MitoQ on dihydrotestosterone (DHT)-induced mitochondrial dysfunction and subsequent hair loss from three perspectives: in vivo, in vitro, and network pharmacology. A mouse model of AGA was used to assess the effectiveness of MitoQ intervention. Seventy-five drug targets and 367 disease targets were identified through network pharmacology analysis. Molecular docking analysis revealed that the androgen receptor (AR) and CYP19A1, which are key targets of MitoQ, may play a role in AGA treatment. CYP19A1 expression was downregulated in lesions from patients with AGA compared to healthy scalp tissue, while AR expression was upregulated. Cellular tests of human dermal papilla cells (DPCs) treated with MitoQ revealed that the mRNA and protein expression of AR remained unchanged, but the mRNA expression of CYP19A1 was upregulated. Our experiments also confirmed that CYP19A1 overexpression prevented DHT-induced apoptosis and upregulated the expression levels of WNT3A and β-catenin, whereas increased apoptosis levels and the downregulation of WNT3A and β-catenin due to CYP19A1 knockdown were reduced by MitoQ. We verified that MitoQ enhanced hair growth in DHT-induced hair loss model mice and reversed DHT-induced apoptosis by enhancing the expression of CYP19A1 in DPCs and that MitoQ may act by mediating the WNT/β-catenin pathway. These findings indicate that MitoQ could be a promising intervention for AGA and that CYP19A1 may serve as a valuable therapeutic target for AGA.

Transdermal Delivery of Superoxide Dismutase Using Polymeric Microneedle Patches to Inhibit Skin Aging

AbstractSkin aging is characterized by a deterioration of skin quality over time resulting from physiological changes and oxidative stress (OS). Superoxide dismutase (SOD) is an effective antioxidant enzyme widely used as a food supplement and cosmetic additive to alleviate OS and retard skin aging. However, conventional SOD delivery routes commonly yield unsatisfactory results due to limited stability, compromised bioavailability, and low absorption efficiency in the gastrointestinal (GI) tract. These issues are addressed by developing SOD‐encapsulated polymeric microneedle (PMN) patches for efficient transdermal delivery. The use of a highly stable SOD isolated from a hot spring microbe ensures its reactivity throughout PMN fabrication and application. This SOD vehicle demonstrated excellent effectiveness through inhibiting skin‐aging and promoting hair growth as validated by extensive in vivo experiments using D‐galactose (D‐gal) induced aging‐mouse model. SOD‐PMNs promoted excellent regeneration of hair follicles, increased melanin synthesis, decreased lipid oxidation, and elevated antioxidative capacity of skin tissue. The success in effective transdermal delivery of SOD promises wide applicability in pharmaceutical and cosmetic industries.

Star Anise (Illicium verum Hook. f.): Dual Therapeutic and Nutritional Potential in Food and Medicine

Star anise (Illicium verum Hook. f., SA) is a well-known culinary seasoning in China and Vietnam. Actually, SA also has been widely used as a traditional Chinese medicine in China with a long history. Phytochemical analysis has revealed that SA contains a high concentration of essential oils, phenols, flavonoids, and other bioactive compounds that contribute to its diverse pharmacological properties. These properties include anti-bacterial, anti-inflammatory and analgesic, anti-oxidation, anti-viral, anti-cancer, anti-diabetes, anti-diarrheal and promoting hair growth. Various preclinical studies have shown that SA extracts and their active constituents may have potential therapeutic applications in preventing and treating various diseases. However, a comprehensive report on the relationship between the active ingredient, biological activity and food characteristics of SA is rare. The medicinal value of SA has not been well valued and developed. This review provides an overview of the botanical chemistry and pharmacological properties of SA, as well as its potential innovative applications in food and personal care products, aiming to provide theoretical support for its further development and utilization. Graphical abstract: http://links.lww.com/AHM/A138

Stimulation of Hair Growth Effect by Fermented Ginsenosides Using Levilactobacillus brevis THK-D437

Hair growth is crucial for physiological functions and psychological well-being, leading to an increasing demand for research in this area. While low-molecular ginsenosides have been shown to promote hair growth in mice, studies on their effects are limited, and there is a lack of research examining the impact of ginsenoside fermentation products derived from lactic acid bacteria. This study investigated the hair-growth-promoting effect of fermented ginsenoside by fermentation of Levilactobacillus brevis THK-D437, which was isolated from the traditional Korean fermented food kimchi and features high β-glucosidase activity. In the cell-based MTT assay, the proliferation rate was increased by 25% in the fermented ginsenoside-treated group on human hair dermal papilla cells (HHDPCs). In the alopecia mouse model study (C57BL/6 mouse model), enhanced hair growth was observed in the fermented ginsenoside-treated mouse groups. Tissue histological analyses showed that the number of hair follicles and the thickness of the epidermis, respectively, were increased in the fermented ginsenoside-treated mouse groups. These results suggested that fermented ginsenoside has a promoting effect on hair growth and a retarding effect on the catagen stage. Therefore, fermented ginseng products might be a new potential therapeutic candidate for promoting hair growth.

Comparison of In Vitro Hair Growth Promotion and Anti-Hair Loss Potential of Thai Rice By-Product from Oryza sativa L. cv. Buebang 3 CMU and Sanpatong.

The bioactive compounds in herbal extracts may provide effective hair loss treatments with fewer side effects compared to synthetic medicines. This study evaluated the effects of Buebang 3 CMU and Sanpatong rice bran extracts, macerated with dichloromethane or 95% ethanol, on hair growth promotion and hair loss prevention. Overall, Buebang 3 CMU extracts contained significantly higher levels of bioactive compounds, including γ-oryzanol, tocopherols, and various polyphenols such as phytic acid, ferulic acid, and chlorogenic acid, compared to Sanpatong extracts. Additionally, ethanolic extracts demonstrated greater bioactive content and antioxidant activities than those extracted with dichloromethane. These compounds enhanced the proliferation of human hair follicle dermal papilla cells (HFDPCs) by 124.28 ± 1.08% (p < 0.05) and modulated anti-inflammatory pathways by reducing nitrite production to 3.20 ± 0.36 µM (p < 0.05). Key hair growth signaling pathways, including Wnt/β-catenin (CTNNB1), Sonic Hedgehog (SHH, SMO, GLI1), and vascular endothelial growth factor (VEGF), were activated by approximately 1.5-fold to 2.5-fold compared to minoxidil. Also, in both human prostate cancer (DU-145) and HFDPC cells, the ethanolic Buebang 3 CMU extract (Et-BB3-CMU) suppressed SRD5A1, SRD5A2, and SRD5A3 expression-key pathways in hair loss-by 2-fold and 1.5-fold more than minoxidil and finasteride, respectively. These findings suggest that Et-BB3-CMU holds promise for promoting hair growth and preventing hair loss.

Formulation &amp; Evaluation of Hair Growth Serum from Hibiscus Flowers and Leaves

The need for cosmetics is very high in this fast-paced environment. The pharmaceutical industry's use of cosmetics is growing daily. We use cosmetics on a daily basis. Cosmetics are meant to be used on teeth, nails, hair, and skincare. Note that toothpastes, hair oils, and hair dyes are all considered cosmetics that are used by everyone on a daily basis. Because using synthetic or chemical products might have unfavorable side effects, individuals are increasingly gravitating toward organic, natural, and herbal formulations that have negligible or no side effects. Herbal remedies are typically recognized for having "No side effect." People deal with a variety of issues, including premature greying of the hair, split ends, dandruff, hair thinning, and excessive sebum production. People are therefore searching for strategies to improve hair growth, prevention, and maintenance. The present investigation focuses at the preparation and evaluation of a herbal hair growth serum made with a combination of natural substances, including olive oil, peppermint oil, vitamin E, hibiscus flowers and leaves, Amla Powder, and curry leaves. The purpose of the serum is to improve scalp health, strengthen hair follicles, and promote hair growth. Hibiscus flowers and leaves are used to extract bioactive chemicals, which are then infused with curry leaves and Amla powder in olive oil. For added advantages, vitamin E and lavender oil are added. Hibiscus flowers are rich in amino acid, which is prime building block of keratin. The leaves also reduce the growth of dandruff-causing fungi, reduce dandruff flakes and prevent its recurrence. Amla Powder has antimicrobial and anti-inflammatory properties that can help reduce dandruff. Curry leaves are rich in antioxidants and proteins, these antioxidants neutralize the free radicals and keep hair healthy and strong. Coconut oil absorbs into your hair quickly, providing moisture to tame frizz and heal breakage. The effectiveness of the serum is assessed in the study using variables including hair growth rate, thickness, strength, scalp health, and general health of the hair. Preliminary findings point to encouraging results in terms of strengthening hair growth and enhancing hair quality.

Research work of Prof. De-Eknamkul, including the mechanistic synergy of hair growth promotion by the Avicennia marina extract and its active constituent (avicequinone C) in dermal papilla cells isolated from androgenic alopecia patients

Androgenetic alopecia (AGA) is a genetically-predetermined disorder that affects many people around the world, leading to progressive hair loss. This baldness can negatively impact people’s perceptions of themselves and scientists are searching for a cure. There are only two US Food and Drug Administration-approved drugs used to treat AGA and they both have side effects. If a natural anti-AGA product could be developed with the ability to be effective minus negative side effects, this could be a game-changer for people with AGA. Professor Wanchai De-Eknamkul, Department of Pharmacognosy and Pharmaceutical Botany, Chulalongkorn University, Thailand, an expert in plant natural product biotechnology, is working to develop a natural anti-AGA product. He is a professor at the University’s Natural Product Biotechnology Research Unit, where research is underway to: elucidate the biosynthesis of bioactive natural products by searching for enzymes and genes involved in their biosynthetic pathways; discover bioactive natural compounds from medicinal plants by either enzyme-based or cell-based screening followed by studying their mechanism of actions; and develop high-performance thin-layer chromatography (HPTLC) as a tool for quick screening and identification of bioactive compounds. De-Eknamkul have been working to shed light on the genes and enzymes involved in the biosynthesis of the diterpenoid ‘plaunotol’ in Croton stellatopilosus. In another line of investigation, they are searching for natural compounds with anti-AGA and anti-grey hair activities and a further area of focus is the development of a technique for direct detection of compounds with anti-diabetes, anti-gonorrhoea and anti-AGA activities.

Hair Growth Effect and the Mechanisms of Rosa rugosa Extract in DHT-Induced Alopecia Mice Model.

Rosa rugosa is a medicinal plant known for its potential anti-inflammatory, antioxidant, anti-cancer, and antimicrobial benefits. The pharmacological effects of Rosa rugosa extract on hair loss have not yet been documented. This research sought to assess the inhibitory effects and mechanisms of action of Rosa rugosa water extract (RWE) in a mouse model of dihydrotestosterone (DHT)-induced alopecia. The study was conducted using C57BL/6 mice, which were assigned to five groups: control, DHT-treated, Rosa rugosa water extract (RWE) at doses of 25 mg/kg and 100 mg/kg body weight, and bicalutamide-treated. To induce hair loss, dihydrotestosterone (1 mg/day per body weight) was administered via intraperitoneal injections, and dorsal hair removal was timed to align with the telogen phase. Each group received oral treatments for a period of 23 days. In this study, we assessed hair growth activity, examined histological changes, and performed immunoblot analysis. We noted improvements in hair length and thickness. Additionally, the protein expression of growth factors associated with hair growth, including vascular endothelial growth factor (VEGF), epidermal growth factor (EGF), and insulin-like growth factor-1 (IGF-1), showed significant increases in the group treated with RWE. Additionally, treatment with RWE suppressed the protein expression of hair growth inhibitory factors, including dickkopf WNT signaling pathway inhibitor 1 (DKK1) and interleukin (IL)-6. Moreover, hair growth regulatory pathway related factors, including ERK, AKT, and GSK-3β, were activated. These findings indicate that RWE could serve as a promising natural therapy for preventing hair loss by enhancing the production of factors that promote hair growth while inhibiting those that suppress it.

Dermal Papilla Cells: From Basic Research to Translational Applications.

As an appendage of the skin, hair protects against ultraviolet radiation and mechanical damage and regulates body temperature. It also reflects an individual's health status and serves as an important method of expressing personality. Hair loss and graying are significant psychosocial burdens for many people. Hair is produced from hair follicles, which are exclusively controlled by the dermal papilla (DP) at their base. The dermal papilla cells (DPCs) comprise a cluster of specialized mesenchymal cells that induce the formation of hair follicles during early embryonic development through interaction with epithelial precursor cells. They continue to regulate the growth cycle, color, size, and type of hair after the hair follicle matures by secreting various factors. DPCs possess stem cell characteristics and can be cultured and expanded in vitro. DPCs express numerous stemness-related factors, enabling them to be reprogrammed into induced pluripotent stem cells (iPSCs) using only two, or even one, Yamanaka factor. DPCs are an important source of skin-derived precursors (SKPs). When combined with epithelial stem cells, they can reconstitute skin and hair follicles, participating in the regeneration of the dermis, including the DP and dermal sheath. When implanted between the epidermis and dermis, DPCs can induce the formation of new hair follicles on hairless skin. Subcutaneous injection of DPCs and their exosomes can promote hair growth. This review summarizes the in vivo functions of the DP; highlights the potential of DPCs in cell therapy, particularly for the treatment of hair loss; and discusses the challenges and recent advances in the field, from basic research to translational applications.

Effects of oxytocin receptor agonists on hair growth promotion

Oxytocin has various effects ranging from promoting labor in pregnant women to alleviating stress. Recently, we reported the hair growth-promoting effects of oxytocin in hair follicle organoids. However, its clinical application faces challenges such as rapid degradation in vivo and poor permeability due to its large molecular weight. Therefore, in this study, we investigated the effects of the oxytocin receptor (OXTR) agonists WAY267464 and LIT001 as alternatives to oxytocin on hair growth. Human dermal papilla (DP) cells were cultured in WAY267464 or LIT001-supplemented medium. The addition of WAY267464 and LIT001 increased the expression of hair growth-related genes in DP cells. We tested the hair growth-promoting effects of WAY267464 and LIT001 using hair follicle organoids in vitro and found that they significantly promoted hair follicle sprouting. Thus, our findings indicate that WAY267464 and LIT001 are potential hair growth agents and may encourage further research on the development of novel hair growth agents targeting OXTR in patients with alopecia.

Anti-Hair Loss Effects of the DP2 Antagonist in Human Follicle Dermal Papilla Cells

Prostaglandin D2 (PGD2) levels are high in the balding areas of human scalps, and PGD2 has been found to inhibit hair growth. It is known that the inhibition of the PGD2 receptor can promote hair growth by preventing hair follicles from entering the catagen phase. Thus, we identified an antagonist of DP2, the receptor for PGD2, as a potential treatment for hair loss using an AI-based DeepZema® drug development program. In this study, we identified that the DP2 antagonist (DP2A) could ameliorate alopecia in human follicle dermal papilla cells (HFDPCs) that were stimulated by dihydrotestosterone (DHT), a known molecule related to hair loss. We observed that the DP2A promoted wound healing efficiency and increased alkaline phosphatase levels in the HFDPCs that were damaged with DHT. In addition, we found that the DP2A diminished the reactive oxygen species (ROS) levels generated in the DHT-damaged HFDPCs. We confirmed that the DP2A effectively recovered the membrane potential of mitochondria in these cells. We also demonstrated that the DP2A enhanced the phosphorylation levels of both Akt and ERK in the HFDPCs that were damaged with DHT. Notably, we revealed that the DP2A slightly enlarged the three-dimensional spheroid size in these cells and confirmed that the DP2A improved hair growth in the organ culture of human hair follicles. Taken together, we suggest that DP2A has therapeutic effects on HFDPCs that are damaged by DHT and holds promise as a potential treatment for treating hair loss.

Piperonylic Acid Promotes Hair Growth by Activation of EGFR and Wnt/β-Catenin Pathway.

Dermal papilla cells (DPCs) are located at the bottom of the hair follicle and play a critical role in hair growth, shape, and cycle. Epidermal growth factor receptor (EGFR) and Wnt/β-catenin signaling pathways are essential in promoting keratinocyte activation as well as hair follicle formation in DPCs. Piperonylic acid is a small molecule that induces EGFR activation in keratinocytes. However, the effects of piperonylic acid on DPCs in regard to the stimulation of hair growth have not been studied. In the present study, piperonylic acid was shown to activate the Wnt/β-catenin signaling pathway in addition to the EGFR signaling pathway in DPCs. Piperonylic acid suppressed DKK1 expression, which presumably promoted the accumulation of β-catenin in the nucleus. In addition, piperonylic acid promoted cyclin D upregulation and cell growth and increased the expression of alkaline phosphatase (ALP), a DPC marker. In a clinical study, the group that applied a formulation containing piperonylic acid had a significantly higher number of hairs per unit area than the placebo group. These results identify piperonylic acid as a promising new candidate for hair loss treatment.

Synergistic Phytochemical and Pharmacological Actions of Hair RiseTM Microemulsion: A Novel Herbal Formulation for Androgenetic Alopecia and Hair Growth Stimulation.

Androgenetic alopecia (AGA) is a genetic condition characterized by an excessive response to androgens, leading to hairline regression in men and hair thinning at the vertex in women, which can negatively impact self-esteem. Conventional synthetic treatments for AGA are often limited by their side effects. In contrast, Thai medicinal plants offer a promising alternative with fewer adverse effects. This study investigates the synergistic phytochemical and pharmacological effects of a novel Hair RiseTM microemulsion, formulated with bioactive extracts from rice bran (Oryza sativa), shallot bulb (Allium ascalonicum), licorice root (Glycyrrhiza glabra), and corn kernels (Zea mays), for the treatment of hair loss. The microemulsion, in concentrations of 50%, 75%, and 100% (v/v), significantly enhanced the proliferation of human hair follicle dermal papilla cells (HFDPCs) compared to minoxidil. Additionally, it upregulated critical hair growth signaling pathways, including Wnt/β-catenin (CTNNB1), Sonic Hedgehog (SHH, SMO, GLI1), and vascular endothelial growth factor (VEGF), surpassing standard controls such as minoxidil and purmorphamine. The microemulsion also demonstrated potent anti-inflammatory and antioxidant properties by reducing nitric oxide production and oxidative stress, factors that contribute to inflammation and follicular damage in AGA. Furthermore, Hair RiseTM inhibited 5α-reductase (types 1-3), a key enzyme involved in androgen metabolism, in both human prostate cancer cells (DU-145) and HFDPCs. These findings suggest that Hair RiseTM microemulsion presents a promising natural therapy for promoting hair growth and reducing hair loss via multiple synergistic mechanisms, offering a potent, plant-based alternative to synthetic treatments.

A finasteride patch for the treatment of androgenetic alopecia: A study of promoting permeability strategy using synthetic novel O-acylmenthols combined with ion-pair

Currently, finasteride (FIN) is approved to treat androgenetic alopecia only orally, and the application of FIN in transdermal drug delivery system (TDDS) has introduced a new approach for treating the disease. This study was aimed to develop a FIN transdermal patch for the treatment of androgenetic alopecia（AGA） by combing ion-pair and O-acylmenthols (AM) as chemical permeation enhancers (CPEs). The formulation of patch was optimized though single-factor investigation and Box-Behnken design. The pharmacokinetics and androgenetic alopecia pharmacodynamics of the patch were evaluated. Additionally, the permeability enhancement mechanisms of ion-pair and AMs were explored at both the patch and skin levels. The effects of ion-pair and AMs on the patch were characterized by rheology study, FTIR, and molecular docking, and the effects on the skin were assessed through ATR-FTIR, Raman study, DSC, CLSM and molecular dynamics. The finalized formulation of FIN patches was consisted of 5 % (w/w) synthetic FIN-CA (Citric Acid), 6 % MT-C6 as CPEs, 25-AAOH as a pressure-sensitive adhesive (PSA), with a patch thickness of 80 ± 5 μm. The final Q24 h is 78.22 ± 5.18 μg/cm2. Based on the high FIN permeability, the pharmacokinetic analysis revealed that the FIN patch group exhibited a slower absorption rate (tmax = 7.3 ± 2.7 h), lower peak plasma concentration and slower metabolic rate (t1/2 = 6.2 ± 0.8 h, MRT0-t = 26.0 ± 7.8 h) compared to the oral group. Moreover, the FIN patch also demonstrated the same effect as the oral group in promoting hair growth in AGA mice. The results indicated that both FIN-CA and AMs could enhance the fluidity of the PSA and weaken the interaction between FIN-CA and PSA, thereby promoting the release of the FIN from the patch. The interaction sites on the skin for ion-pair and the four AMs were found in the stratum corneum (SC) of the skin, disrupting the tight arrangement of stratum corneum lipids. This study serves as a reference for the multi-pathway administration of FIN and the combination of ion-pair with AMs to enhance drug permeation.

Impact of SDF-1 and AMD3100 on Hair Follicle Dynamics in a Chronic Stress Model.

Chronic stress is a common cause of hair loss, involving inflammatory responses and changes in cellular signaling pathways. This study explores the mechanism of action of the SDF-1/CXCR4 signaling axis in chronic stress-induced hair loss. The research indicates that SDF-1 promotes hair follicle growth through the PI3K/Akt and JAK/STAT signaling pathways. Transcriptome sequencing analysis was conducted to identify differentially expressed genes in the skin of normal and stressed mice, with key genes SDF-1/CXCR4 selected through machine learning and a protein-protein interaction network established. A chronic stress mouse model was created, with injections of SDF-1 and AMD3100 administered to observe hair growth, weight changes, and behavioral alterations and validate hair follicle activity. Skin SDF-1 concentrations were measured, differentially expressed genes were screened, and pathways were enriched. Activation of the PI3K/Akt and JAK/STAT signaling pathways was assessed, and siRNA technology was used in vitro to inhibit the expression of SDF-1 or CXCR4. SDF-1 promoted hair follicle activity, with the combined injection of SDF-1 and AMD3100 weakening this effect. The activation of the PI3K/Akt and JAK/STAT signaling pathways was observed in the SDF-1 injection group, confirmed by Western blot and immunofluorescence. Silencing SDF-1 through siRNA-mediated inhibition reduced cell proliferation and migration abilities. SDF-1 promotes hair growth in chronic stress mice by activating the PI3K/Akt and JAK/STAT pathways, an effect reversible by AMD3100. The SDF-1/CXCR4 axis may serve as a potential therapeutic target for stress-induced hair loss.

Genomic Markers and Personalized Medicine in Androgenetic Alopecia: A Comprehensive Review

Androgenetic alopecia (AGA) is the most common form of hair loss, significantly affecting both men and women worldwide. Characterized by progressive hair thinning and loss, AGA is primarily mediated by dihydrotestosterone (DHT). Recent research has identified numerous single-nucleotide polymorphisms (SNPs) associated with AGA, particularly in genes involved in androgen metabolism, prostaglandin pathways, and vasodilation. These genetic markers offer insights into AGA pathophysiology and potential therapeutic targets. Pharmacogenetics, the study of how genetic variations influence drug response, holds promise for personalized AGA treatment. Identifying SNPs that affect the efficacy of treatments like minoxidil and finasteride enables the development of tailored therapeutic strategies. For instance, genetic variants in the SRD5A2 gene, which affects DHT metabolism, can predict responsiveness to 5-alpha-reductase inhibitors. Beyond pharmacogenetics, RNA interference (RNAi) technologies, e.g., small interfering RNAs (siRNAs), present new therapeutic avenues. Studies have shown the efficacy of RNAi-based treatments in targeting androgen receptors, promoting hair growth in AGA models. Integrating genetic and pharmacogenetic research into clinical practice can transform AGA management, enhancing treatment efficacy and patient outcomes. In conclusion, genetic and pharmacogenetic insights are crucial for developing personalized treatments for AGA, while emerging RNAi technologies offer promising new interventions. These advancements represent significant steps toward more effective and individualized AGA therapies.

The Potential of Resveratrol-Rich Peanut Callus Extract in Promoting Hair Growth and Preventing Hair Loss

The Potential of Resveratrol-Rich Peanut Callus Extract in Promoting Hair Growth and Preventing Hair Loss

Evaluation of the safety and efficacy of concentrated growth factors for hair growth promotion in androgenetic alopecia patients: A retrospective single-centre, single-arm study.

This study was designed to evaluate the safety and efficacy of injections of concentrated growth factors (CGF) for hair growth promotion in androgenetic alopecia (AGA) patients. A retrospective review of AGA patients treated with injections of CGF at our center from October 2021 to April 2023 was performed. A total of 3 injections were administered every 3-4 weeks apart, and evaluation were performed before the first injection and at 3 months, 6 months later. The outcomes were assessed by trichoscopy photomicrographs and the Global Aesthetic Improvement Scale (GAIS). At 3 months after the first injection, the hair density and hair growth ratio were significantly improved. Significant improvements were found in GAIS score by both patients and independent doctors and the hair growth promotion was sustained for 6 months after first treatment. According to this tiny single-arm trial, the use of CGF injection may help AGA by increasing terminal hair density and hair density. No severe topical or systemic adverse events occurred during the treatment.