Topical Retinol Research Articles

A SYSTEMATIC REVIEW: MECHANISM OF ACTION ORAL AND TOPICAL RETINOL (Retinyl palmitate) AS A THERAPY OF ACNE SKIN IN BEAUTY PRODUCTS

Acne is one of the dermatological diseases that often appears in adolescence to adulthood. Retinol (retinyl palmitate) is a first-generation vitamin A derivative used for acne therapy by reducing sebum production which can cause acne bacteria to grow. This study aims to determine the effectiveness and safety of oral and topical retinol preparations. The method used in the study is systematic review using the PubMed search engine and google scholar according to keywords using the PICO method. Articles that can be downloaded with a period of 2013-2023 for the next article are downloaded in selection according to the criteria, namely inclusion and exclusion. The results of the selection of inclusion criteria there are 12 journals to discuss the effectiveness and safety related to topical preparations and peroral retinol as anti-products acne. The mechanism of action of topical retinol is to reduce the production of micro-comedones caused by the bacteria Propionibacterium acnes (P. acne) for oral retinol has the mechanism of action works by inhibiting the production of sebum by androgen hormones in the 3-alpha-hydroxysteroid oxidation pathway using the enzyme retinol dehydrogenase to retinaldehyde to be able to dissolve and be delivered at the destination. Oral or topical retinol preparations provide different side effects. Topical retinol has a lower rate of side effects compared to oral retinol. The level of safety and effectiveness of topical retinol preparations is better than oral retinol.

Retinol palmitate in management of chronic Steven-Johnson Syndrome with ocular surface keratinization

PurposeTo study the outcomes of topical Retinol Palmitate ophthalmic solution in chronic Stevens-Johnson Syndrome with ocular surface keratinisation. MethodsIt was a comparative interventional study conducted at Rajendra Prasad Centre for Ophthalmic Sciences, Delhi, India from 2020 to 2022 evaluating outcomes of addition of topical Retinol Palmitate to conventional treatment objectively as well as subjectively from baseline up to 12 weeks. ResultsA statistically significant improvement was seen in patients who received topical Retinol palmitate at 12 weeks in terms of Schirmer-1 test(p=<0.01), tear prism height on ASOCT(p = 0.02), Rose Bengal staining score of cornea(p = 0.01) and conjunctiva (p < 0.01), reduction of ocular surface keratinisation on impression cytology(p = 0.01) and subjective evaluation using OSDI questionnaire(p = 0.04).Impression cytology revealed goblet cells in Retinol palmitate group at 1 week after initiation of therapy, which increased further at 1 month follow up but reduced at 3 months. No goblet cells were seen in control group at any follow-up. No significant difference was noted between the two groups in terms of visual acuity, tear film breakup time, inflammatory cells on impression cytology and inflammatory markers in tears. ConclusionTopical Retinol palmitate is a safe and effective drug in cases of chronic SJS with ocular surface keratinisation. It has the potential to reverse keratinisation of the ocular surface and promote development of goblet cells. However, the survival of goblet cells is not long lasting.

43372 Efficacy and Tolerability of Stabilized Topical Retinol for Signs of Skin Aging: An Integrated Analysis of 6 Placebo-Controlled Studies

43372 Efficacy and Tolerability of Stabilized Topical Retinol for Signs of Skin Aging: An Integrated Analysis of 6 Placebo-Controlled Studies

Using 3% retinol peeling and cosmeceuticals for the aesthetic wellness of the oncological patient after precautionary endocrine treatment: A case series.

Roughness, sagging, and skin rash are common in patients with breast cancer treated with LH-RH analog plus tamoxifen or aromatase inhibitors as adjuvant postsurgical endocrine therapy. The use of topical retinol (vitamin A) has shown to be an efficacious cosmetic treatment. Peeling with an advanced retinol peel formulation based on 3% retinol, 4% triethyl citrate, 0.1% aminophil, bisabolol, and 1% vitamin E acetate, in a vehicle in an alcoholic solution has been successfully used to ameliorate skin appearance on subjects with photodamage and in the aged population. We aimed to verify its use during adjuvant chemotherapy. Four subjects experiencing skin issues during postsurgical adjuvant therapy for their breast cancer received retinol peel at least 6 weeks after stopping their postsurgery therapy as a low invasive aesthetic medical treatment to be used both at the dermatology desk and at home. Retinol peel was effective, safe, and well-tolerated, improving skin brightness and firmness in all the patients, since 4 weeks after the beginning of the treatment. Patients declared to be satisfied with the treatment and their skin appearance letting them feel better for cancer recovery, too. These preliminary observations suggest that the use of an advanced retinol peel formulation might improve skin appearance in women experiencing skin damages caused by adjuvant therapy after breast cancer surgery.

206 AI-based approach to quantify facial signs of skin ageing: Application in subjects treated with topical retinol 0.3%

206 AI-based approach to quantify facial signs of skin ageing: Application in subjects treated with topical retinol 0.3%

247 Comparison of liposome encapsulated retinol and pure retinol on anti-aging gene expression using human skin model

Retinol is the pure form of pro-vitamin A and is produced by the breakdown of its precursor β-carotene, a red-orange pigment in the body. Retinol is metabolized to its active form retinoic acid which binds to retinoic acid receptors to transactivate barrier function, anti-inflammation, and extracellular matrix gene expression. Topical retinol application has been demonstrated in clinical studies to improve hyperpigmentation and wrinkles in chronologically aged and photodamaged skin. Pure retinol is highly sensitive to visible and UV light, readily undergoes oxidation and discoloration.

A Topical Combination Regimen of Benzoyl Peroxide and Retinol Moisturizer for Mild to Moderate Acne

Topical therapies, in many cases over-the-counter (OTC) formulations, are available for the treatment of acne, including benzoyl peroxide (BPO), salicylic acid, and retinoids. While these agents provide therapeutic efficacy, combination regimens can offer improved outcomes due to their ability to address multiple pathways involved in acne formation, making them better suited to address the multiple factors involved in acne pathogenesis and the breadth of complexion issues associated with the condition. The present study assessed the efficacy and tolerability of a daily regimen comprised of topical low-dose (2.5%) BPO applied in the morning and topical retinol applied in the evening in 33 subjects with mild to moderate acne who completed the study. A significant reduction in global total acne count from baseline to week 12 (primary endpoint) was achieved, in addition to significant improvements in Investigator Global Assessment (IGA) of acne severity and reductions in inflammatory and non-inflammatory lesions. Treatment also significantly improved acne-complexion graded efficacy parameters (tactile surface roughness, uneven skin tone, skin blotchiness, and lack of skin clarity), and was well-tolerated, with no statistically significant (P&lt;0.05) increases in objective or subjective facial irritation. Significant improvements from baseline to week 12 were observed for both self-assessment of facial skin conditions and quality of life (QoL) scores. No product-related adverse events (AEs) were observed in the study subjects. J Drugs Dermatol. 2022;21(12):1340-1346. doi:10.36849/JDD.6845.

LB726 The combination of 0.5% retinol with a naturally derived TRPV 1 antagonist and anti-inflammatory botanical extract helps mitigate retinoid-induced irritation

The use of topical retinol is recognized as the gold standard for the treatment of photodamaged skin. However, topical application of retinol can potentially cause irritation manifested as burning sensation, erythema, peeling, or dryness. This can contribute to non-compliance or discontinuation of use for many individuals. Studies have shown that adjustments in timing and concentration levels can help mitigate the induced effects of retinol. There is very little understanding of the molecular mechanisms underlying retinoid irritation, however it has been shown that TRVP1 antagonists help mitigate irritation.

Cosmetic Commentary: Response to "Is bakuchiol the new 'skincare hero'?"

This commentary is intended to expand the discussion around comparisons of topical bakuchiol to topical retinol. The state of the evidence for existing retinoid studies, the limitations in previous assessment methodologies, and the evolution of newer methods with high resolution image analysis-based techniques are explored.

Comparison of Extracorporeal Shock Wave Therapy versus Manual Lymphatic Drainage on Cellulite after Liposuction: A Randomized Clinical Trial.

Introduction Cellulite is associated with variations in the skin appearance with cottage cheese, mattress-like, or orange peel. The most common areas for these lesions are the posterior or upper thighs and buttocks and mainly affect females after puberty. The objective of the study was to determine whether extracorporeal shock wave therapy (ESWT) or manual lymphatic drainage (MLD) is more effective for the reduction of the grade of cellulite after liposuction. Methods This study is a single-blinded randomized controlled clinical trial. Thirty females with grade 3 cellulite were randomly distributed into two groups equal in number (n = 15), group A was equipped to ESWT and group B was equipped to MLD. The cellulite grading scale was used to assess cellulite grade, and the skinfold caliper was used to assess the thickness of subcutaneous fat. The assessment was carried out before and four weeks after starting the treatment. Both groups received topical retinol twice daily for four weeks; in addition, group A received ESWT, while group B received MLD, two times/week for 4 weeks. Results The mean values of the skinfold caliper in group A decreased by 24.4% and in group B by 15.38% with a significant difference between the two groups (p < 0.001). Also, the mean values of the cellulite grading scale decreased significantly after treatment in group A compared with the mean values of group B (p < 0.001). Conclusions There was more reduction in the grade of cellulite and thickness of subcutaneous fat in the ESWT group than the MLD group after liposuction.

The influence of retinol concentration in liquid crystal formula on epidermal growth factor, interleukin-6 and transglutaminase-1 mRNA expression in the epidermis.

Topical retinol application effectively reduces the effects of photoaging and improves skin condition, e.g. influences the process of keratinization of the epidermis, which improves stratum corneum structure and reduces transepidermal water loss. However, cosmetics use lower concentrations of retinol, which has been associated with emerging hypersensitivity reactions as well as redness and irritation of the skin. The question arises whether the vehicle used in the cosmetic may be important in stimulating the inflammatory reaction in the skin and if the concentration of retinol used could significantly affects the growth of epidermal cells. The aim of this study was to evaluate the effects of different concentrations of liquid crystal retinol (0.15%, 0.3% and 0.5%) on the clinical and histological characteristics of a reconstructed epidermis skin model. It also compares the effectiveness of 0.3% retinol formula in liquid crystal to that in lipid. The study used reconstructed human epidermis tissue containing normal human keratinocytes. Four original formulas containing retinol were tested: 0.15%, 0.3% and 0.5% with a liquid crystal base, and 0.3% with a lipid base. Interleukin 6 (IL-6), transglutaminase-1 (TGM1), and epidermal growth factor (EGF) mRNA expression was measured expression of the skin-equivalent tissue for 10 days of exposure. Histopathological analysis and mRNA quantification were performed. Gene expression was analyzed by total mRNA extraction. All liquid crystal formulas induced higher EGF mRNA expression than lipid base formula. IL-6 expression did not differ significantly from the DPBS reference values. Interestingly, TGM1 expression was found to increase together with increasing retinol concentration (0.15%, 0.3%, 0.5%). Histological examination revealed changes in epidermal structure, mainly hyperkeratinization of the stratum corneum. Our results support the hypothesis liquid crystal formula might be regarded as more beneficial since it inducess less pro-inflammatory action manifested by lowered expression IL-6. In addition, EGF expression was found to correlate significantly with the retinol concentration of the liquid crystal formula: 0.5% > 0.3% > 0.15% (P < 0.05). Lower concentrations may increase TGM1 expression, thus enhancing the formation of a protective layer of cornified envelope.

683 Exploratory study to examine the gene expression effects of topical retinol on aging-related pathways in individuals of East Asian descent

683 Exploratory study to examine the gene expression effects of topical retinol on aging-related pathways in individuals of East Asian descent

Assessment of topical bakuchiol and retinol for facial photoageing

Assessment of topical bakuchiol and retinol for facial photoageing

Topical retinol attenuates stress-induced ageing signs in human skin ex vivo, throughEGFR activation viaEGF, but notERK andAP-1 activation.

Stress-induced oxidative damage and the inflammatory response lead to degradation of collagen and elastic fibres and wrinkle formation. Topical retinol (or vitamin A) can be a strategy to attenuate the effects of stress in skin as it promotes collagen and elastic fibre production and reduces protease synthesis. This study investigated the effect of topical retinol in stressed human skin using in vitro and ex vivo models. Human skin explants were treated with high levels of epinephrine (as observed in stressed patients) and topically with retinol for 13days. Human dermal fibroblasts were treated with conditioned medium of ex vivo retinol-treated and non-stressed (without epinephrine) human skin for 24hours. In ex vivo human skin, retinol reversed the epinephrine-induced reduction in epidermal proliferation and differentiation, normalizing epidermal thickness. Retinol also inhibited the epinephrine-induced reduction in elastic fibre deposition and organization, restoring dermal thickness. In addition, retinol reversed the epinephrine-induced increase in c-JUN protein expression, but it did not alter extracellular signal-regulated kinase 1/2 (ERK) phosphorylation in ex vivo human skin. Conditioned medium of ex vivo retinol-treated and non-stressed human skin presented an increased protein expression of epidermal growth factor (EGF). In human dermal fibroblasts, conditioned medium of ex vivo retinol-treated and non-stressed human skin increased protein and gene expression of fibrillin-1 and protein expression of EGF receptor (EGFR). In conclusion, topical retinol attenuates stress-induced skin ageing signs in human skin ex vivo, probably through EGFR activation via EGF, but not by the stress-activated ERK 1/2 and c-JUN pathways.

Topical Retinol Restores Type I Collagen Production in Photoaged Forearm Skin within Four Weeks

Production of type I collagen (COL1), the major structural protein of the skin, declines during aging, leading to skin thinning and becoming fragile, which increases the risk of bruising and wound healing disorders in the elderly. Topical treatments that can restore COL1 synthesis and ultimately COL1 content in aged skin hold promise to improve skin health. Much effort has been spent on developing agents that can safely and effectively enhance COL1 synthesis in aged skin. However, how fast and to what extent COL1 production in aged skin can be enhanced by a topical treatment remains unclear. Herein, we investigated a four-week topical retinol (ROL) treatment. A one-day occlusion of ROL (0.4%) or vehicle was applied on photoaged forearms of elderly (&gt;65 years old) subjects once a week for four weeks. Vehicle was also applied on forearms of young (23–33 years) subjects in the same manner. Skin samples were obtained one week after the last treatment and analyzed for COL1 synthesis. We found that the ROL treatment increased the level of COL1 mRNA (2.3-fold) and proCOL1 protein (1.8-fold) in photoaged forearms to levels similar to that of young forearms within four weeks. Our study proves the concept that reduced COL1 production in aged skin can be readily restored. In addition, our study provides an evidence-based foundation for developing COL1-enhancing topical agents, and establishes a reliable and practical efficacy test for evaluating such agents.

Dry eye diagnosis and management

Dry eye disease is a very common multifactorial disease of the lacrimal functional unit that results in tear film instability, hyperosmolarity, chronic irritation and inflammation of the ocular surface. Diagnostic tools have been developing rapidly, however, both classic dry eye tests (Schirmer I test, fluorescein staining of the surface epithelium and tear film break-up time) and noninvasive imaging techniques are essential for an exact diagnosis. The management of dry eye syndrome can be either conservative or invasive based on the severity of the disease. The basic aim of treatment is to improve quality of life and reduce subjective complaints and objective ocular surface alterations in dry eye patients. The first line of treatment is tear substitution with artificial tear drops, gels and ointments. In moderate cases preservative-free tear supplementation, topical anti-inflammatory therapy and retinol treatment is recommended. Temporary or permanent punctal plug occlusion, therapeutic contact lenses or moisture chamber use constitute other options. In severe cases the application of topical autologous serum, systemic anti-inflammatory therapy, androgen substitution, secretagogues and surgical intervention can be effective. In the future, noninvasive diagnostic tools and instruments such as screening methods are likely to be developed. In addition, causal therapy of the dry eye will play a greater role, including cyclosporine therapy, secretion stimulation, growth factor-containing artificial tears, as well as secratogogues, immunomodulants and androgenic complexes for severe forms of the disease.

Clinical evaluation of a topical retinol treatment to address signs of aging on the hands, neck, and décolletage

Clinical evaluation of a topical retinol treatment to address signs of aging on the hands, neck, and décolletage

Zellulitis

Cellulite is a condition affecting the dermal and subdermal compartment and developing on thighs and buttocks of almost every woman. Macroscopically, cellulite is characterized by dimpling, visible either spontaneously or after provoking maneuvers. While published concepts on the pathophysiology of cellulite are in parts inconclusive or contradictory, there are at least some recent studies describing or confirming structural and anatomic changes on dermal and subdermal tissues: (1) A gender specific dimorphism with subdermal septae oriented orthogonally towards the skin surface as well as protrusion of fat tissue into the dermis. (2) These intradermal fat protrusions additionally correlate with the presence of cellulite. (3) There is also a correlation between the thickness of the subdermal fat layer and the presence of cellulite. (4) Cellulite also correlates with focal hypertrophic subcutaneous septae and a reduced density of septae in general. Treatment of cellulite aims at (1) the reduction of the subcutaneous fat layer, (2) increase in dermal thickness and elasticity and (3) dissection of hypertrophic connective tissue septae, responsible for the most pronounced dermal indentions. A variety of treatment options have evolved ranging from topical retinol to interstitial laser.

Epidermal Hyperplasia and Elevated HB-EGF are More Prominent in Retinoid Dermatitis Compared with Irritant Contact Dermatitis Induced by Benzalkonium Chloride

'Retinoid dermatitis' is a retinoid-induced irritant contact dermatitis (ICD). The mechanism of retinoid dermatitis may be different from that of other ICDs. However, it remains uncertain how topical retinoid induce ICD. We compared several aspects of contact dermatitis induced by topical retinol and benzalkonium chloride (BKC) on hairless mice skin. 2% retinol or 2.5% BKC was applied to hairless mice and transepidermal water loss (TEWL), ear thickness, histologic and immunohistochemical findings were compared. We also compared mRNA expression of inflammatory cytokines, epidermal differential markers, cyclooxygenases (COXs) and heparin binding epidermal growth factor like growth factor (HB-EGF). Topical application of 2% retinol and 2.5% BKC increased TEWL and ear thickness in similar intensity. Epidermal hyperplasia was more prominent in retinol treated skin. Proliferating cell nuclear antigen, involucrin and loricrin expression were higher in retinol-treated skin than in BKC-treated skin. Filaggrin, however, was more expressed in BKC-treated skin. The mRNA expression of IL-8, TNF-alpha, COX-2, involucrin, loricrin and filaggrin were increased in both retinol- and BKC-treated skin in similar intensity. HB-EGF was more significantly increased in retinol-treated skin. Elevated HB-EGF and epidermal hyperplasia are more prominent features of retinoid dermatitis than in BKC-induced ICD.

Improvement of photoaged facial skin in middle-aged Japanese females by topical retinol (vitamin A alcohol): A vehicle-controlled, double-blind study

Topical tretinoin formulation is still unavailable in Japan. Because topical retinol, which is less potent but may cause less irritation, is available here, we have performed a randomized, blinded, vehicle-controlled study on the face using a once-nightly regimen for the treatment of mild photoaging in middle-aged Japanese females. First, a 26-week study was conducted in 57 subjects with a 0.075% retinol cream and its vehicle on each half side of the face. Three of the 57 subjects withdrew from the study due to irritation, although this rate was much smaller than that noted in our previous study with topical tretinoin. After 26 weeks, the rates of photoaging improvement were significantly higher on the retinol side: 27 out of 54 (50%) versus 13 (24%) for the fine wrinkling and 15 out of 54 (28%) versus 1 (2%) for deep wrinkling. A similar trial with a 0.04% retinol cream for 13 weeks revealed less prominent improvements in fine wrinkling but minimal irritation. From these data, we think that retinol creams, especially 0.04% cream, are suitable for daily use in the general population because of the low irritancy, even for those with sensitive skin.