Hair Sciences Research Articles

Advancements and Challenges in Hair Science in Worldwide: The Scientific Journey Begins at the Brazilian Journal of Hair Health

Advancements and Challenges in Hair Science in Worldwide: The Scientific Journey Begins at the Brazilian Journal of Hair Health

Recent Progress in Hair Science and Trichology.

Hair is important to our appearance as well as to protect our heads. Human hair mainly consists of proteins (80-85%), melanin pigments (0-5%), water (10-13%), and lipids (1-6%). The physicochemical properties of hair have been studied for over 100 years. However, they are not yet thoroughly understood. In this review, recent progress and the latest findings are summarized from the following three perspectives: structural characteristics, delivery and distribution of active ingredients, and hair as a template. The structural characteristics of hair have been mainly investigated by microscopic and/or spectroscopic techniques such as atomic force microscopy integrated with infrared spectroscopy (AFM-IR) and rheological measurements. The distribution of active ingredients has been generally evaluated through techniques such as nanoscale secondary ion mass spectrometry (NanoSIMS). And finally, attempts to explore the potential of hair to be used as a substrate for flexible device fabrication will be introduced.

Reimagining Hair Science: A New Approach to Classify Curly Hair Phenotypes via New Quantitative Geometric and Structural Mechanical Parameters.

Hair is a natural polymeric composite primarily composed of tight macrobundles of keratin proteins, which are highly responsive to external stimuli, similarly to the hydrogels and other natural fibrous gel systems like collagen and fibrin.Hair and its appearance play a significant role in human society. As a highly complex biocomposite system, it has been traditionally challenging to characterize and thus develop personal care products. Over the last few decades, a significant societal paradigm shift occurred among those with curly hair, accepting the natural morphological shape of their curls and styling their hair according to its innate, distinct, and unique material properties, which has given rise to the development of new hair classification systems, beyond the traditional and highly limited race-based distinction (Caucasian, Mongolian, and African). L'Oréal developed a hair typing taxonomy based on quantitative geometric parameters among the four key patterns─straight, wavy, curly, and kinky, but it fails to capture the complex diversity of curly and kinky hair. Acclaimed celebrity hair stylist Andre Walker developed a classification system that is the existing gold standard for classifying curly and kinky hair, but it relies upon qualitative classification measures, making the system vague and ambiguous of phenotypic differences. The goal of this research is to use quantitative methods to identify new geometric parameters more representative of curly and kinky hair curl patterns, therefore providing more information on the kinds of personal care products that will resonate best with them and thus maximize desired appearance and health, and to correlate these new parameters with its mechanical properties. This was accomplished by identifying new geometric and mechanical parameters from several types of human hair samples.Geometric properties were measured using scanning electron microscopy (SEM), photogrammetry, and optical microscopy. Mechanical properties were measured under tensile extension using a texture analyzer (TA) and a dynamic mechanical analyzer (DMA), which bears similarity to the common act of brushing or combing. Both instruments measure force as a function of applied displacement, thus allowing the relationship between stress and applied stretch ratio to be measured as a hair strand uncurls and stretches to the point of fracture. From the resulting data, correlations were made between fiber geometry and mechanical performance. This data will be used to draw more conclusions on the contribution that fiber morphology has on hair fiber mechanics and will promote cultural inclusion among researchers and consumers possessing curly and kinky hair.

Formulation and Evaluation of Herbal Shampoo

Hair is an important part of the body appeal and its look is a health indicator. Accordingly, recent advances in hair science and hair care technologies have been reported in literature claiming innovations and strategies for hair treatments and cosmetic products. The treatment of hair and scalp, primarily, involved the use of shampoo for an effective, but gentle cleansing; however, for years, the shampoo is considered not only as a cosmetic product having the purifying purpose, but it is also responsible for maintaining the health and the beauty of hair, imparting gloss and improving manageability. For meeting the needs of a multitasking formulation, following also the recent marketing-trend addressed to the "natural world", new challenges for cosmetic technology are aimed towards the research of natural ingredients, as well as new techniques for shampoo formulation. Regarding the recent development of solid shampoos, little information is available about their use, formulation and advantages. This review is largely focused on the description of solid shampoos, mainly based on the use of clays, herbs or flours as washing bases alternative to the traditional ones, consisting of a combination of synthetic surfactants, together with other usual ingredients expected in a shampoo formulation

Review of the 44th Congress of S.I.TRi. (Italian Society for Hair Science and Restoration) | Florence, Italy | May 27-29, 2022

Immediately following the World Live Surgery Workshop, the Italian Society for Hair Science and Restoration (S.I.TRi.) began their two and a half-day congress in the Palazzo dei Congressi. The first day was afternoon workshops including discussions and presentations of the ISHRS live surgeries

Meeting Review

![Figure][1]</img> On May 26-27, 2022, the ISHRS World Live Surgery Workshop was held in association with Global Council member, the Italian Society of Hair Science and Restoration (S.I.Tri.), in Prato outside Florence at the Instituto Medico Toscano. There were 9 operating faculty supported by 14

ABHRS President’s Corner

![Figure][1]</img> I recently had the pleasure and ‘ honor of speaking at the Italian Society for Hair Science and Restoration (Societa’ Italiana di Tricologia) in Florence, Italy, this past month, and attended the ISHRS Live Surgery Workshop. I was reminded of what an amazing and highly

Shampoos: Hair Care Cosmetics

In this article we studied hair care product shampoos which are for topical preparation on the hair. Recent advances in hair science and hair care technologies have been reported in literature claiming innovations and strategies for hair treatments and cosmetic products. The treatment of hair and scalp involved the use of shampoo for an effective, gentle cleansing, the shampoo is condidered not only as a cosmetic product having purifying purpose, but it is also responsible for maintaining the health and beauty of hair, imparting gloss and improving manageability. Shampoos is hair care product which is used to remove grease, dirt, dandruff and promote hair growth, strengths a hair. It also make hair smooth,soft and lustrous.Various contents are use in shampoo,some shampoos content drug also when medicated shampoos is to be prepare.In Shampoos various natural or herbal product are also used such as aloevera,neem,jasmine etc. This review largely focus on the description of shampoo

Hair Sciences: Hair Follicle generation in a Mouse Model Using a Combination of Human Dermal Papilla and Follicular Epithelial Cells

![Figure][1]</img> Research into hair follicle replication using cell therapy offers hope for patients with extensive hair loss. Currently, these patients have limited medical and surgical treatment options given their inadequate donor hair supply for hair transplantation. The study reviewed in

HAIR SCIENCE MINI-SERIES: Neuroendocrinology of the Human Hair Follicle Episode 3: A “Hairy” Excursion into the Hypothalamic-Pituitary-Thyroid Axis

Welcome back! In the last installment of this miniseries (November/December 2020), we explored the rather amazing fact that your scalp hair follicles (HFs) have established a fully functional equivalent of the central neuroendocrine stress response system—the hypothalamus-pituitary-adrenal (HPA)

Brief descriptions of the principles of prominent methods used to study the penetration of materials into human hair and a review of examples of their use.

Consumers are attracted to the latest fashion trends and different looks. This drives the search for novel hair treatments. Some chemicals present in hair treatment products can penetrate the hair shaft. These materials can either nourish or injure the hair cortex. Different techniques have been used to investigate the mechanism of molecule penetration and the conditions under which penetration occurs. This article reviews the techniques applied for this purpose. Various microscopy techniques are used to capture clear and colourful images to determine the diffusion pathways and the exact location of the molecules under study. However, the laborious sample preparation often leads to sample destruction since cross-sectioning is often required. While various other techniques have been successfully used for investigating the penetration methods, most of these require different amounts of work to be put in for sample preparation and instrumentation. Several spectroscopic techniques have been used to study the penetration of the molecules because of the high levels of accuracy and the quick response time of these techniques. Moreover, the samples are not damaged during the investigation.

Hair Sciences: Generation of Hair-Bearing Human Skin Entirely from Pluripotent Stem Cells

![][1] This month’s column will review a scientifically impactful paper published in Nature titled, “Hair-bearing human skin generated entirely from pluripotent stem cells.”[1][2] Cell culture systems containing epidermal and dermal cells have been used for decades to study skin

HAIR SCIENCE MINI-SERIES: Neuroendocrinology of the Human Hair Follicle Episode 2: Scalp Hair Follicles and the Hypothalamic-Pituitary-Adrenal Axis

Welcome to Episode 2 of the new HAIR SCIENCE miniseries! In Episode 1, we kicked off this series with a foray into the seemingly outlandish world of hair follicle (HF) neuroendocrinology and covered it in broad strokes by providing key background information, general concepts, and important

Special Issue “Recent Advances in Hair Science and Hair Care Technologies”

Scalp hair is very important for men and women especially in terms of fashion and appearance [...]

Hair Sciences

![][1] The study reviewed in this month's Hair Sciences column is titled, “Derivation of Hair-Inducing Cell from Human Pluripotent Stem Cells.” In their January 2015 publication in PLOS One,[1][2] Gnedeva and colleagues directed the development of human embryonic stem cells (hESC

Hair Care Cosmetics: From Traditional Shampoo to Solid Clay and Herbal Shampoo, A Review

Hair is an important part of the body appeal and its look is a health indicator. Accordingly, recent advances in hair science and hair care technologies have been reported in literature claiming innovations and strategies for hair treatments and cosmetic products. The treatment of hair and scalp, primarily, involved the use of shampoo for an effective, but gentle cleansing; however, for years, the shampoo is considered not only as a cosmetic product having the purifying purpose, but it is also responsible for maintaining the health and the beauty of hair, imparting gloss and improving manageability. For meeting the needs of a multitasking formulation, following also the recent marketing-trend addressed to the "natural world", new challenges for cosmetic technology are aimed towards the research of natural ingredients, as well as new techniques for shampoo formulation. Regarding the recent development of solid shampoos, little information is available about their use, formulation and advantages. This review is largely focused on the description of solid shampoos, mainly based on the use of clays, herbs or flours as washing bases alternative to the traditional ones, consisting of a combination of synthetic surfactants, together with other usual ingredients expected in a shampoo formulation.

Hair Sciences: Sandalwood Demonstrated to Promote Human Hair Growth through Olfactory Receptors Present on the Hair Follicle

1. Vlad Ratushny, MD, PhD (vratushny{at}maderm.org) 1. Beverly, Massachusetts, USA ![][1] In their September 2018 publication in Nature Communications, Cheret and colleagues showed that a synthetic sandalwood odorant stimulated the olfactory receptor OR2AT4 located in the outer

Updates in the understanding and treatments of skin & hair disorders in women of color.

Skin of color comprises a diverse and expanding population of individuals. In particular, women of color represent an increasing subset of patients who frequently seek dermatologic care. Acne, melasma, and alopecia are among the most common skin disorders seen in this patient population. Understanding the differences in the basic science of skin and hair is imperative in addressing their unique needs. Despite the paucity of conclusive data on racial and ethnic differences in skin of color, certain biologic differences do exist, which affect the disease presentations of several cutaneous disorders in pigmented skin. While the overall pathogenesis and treatments for acne in women of color are similar to Caucasian men and women, individuals with darker skin types present more frequently with dyschromias from acne, which can be difficult to manage. Melasma is an acquired pigmentary disorder seen commonly in women with darker skin types and is strongly associated with ultraviolet (UV) radiation, genetic factors, and hormonal influences. Lastly, certain hair care practices and hairstyles are unique among women of African descent, which may contribute to specific types of hair loss seen in this population, such as traction alopecia, trichorrhexis nodosa and central centrifugal cicatricial alopecia (CCCA).

From hair in India to hair India

In all cultures, human hair and hairdo have been a powerful metaphor. Tracing back the importance and significance of human hair to the dawn of civilization on the Indian subcontinent, we find that all the Vedic gods are depicted as having uncut hair in mythological stories as well as in legendary pictures. The same is true of the Hindu avatars, and the epic heroes of the Ramayana, and the Mahabharata. Finally, there are a number of hair peculiarities in India pertinent to the creed and religious practices of the Hindu, the Jain, and the Sikh. Shiva Nataraja is a depiction of the Hindu God Shiva as the cosmic dancer who performs his divine dance as creator, preserver, and destroyer of the universe and conveys the Indian conception of the never-ending cycle of time. The same principle manifests in the hair cycle, in which perpetual cycles of growth, regression, and resting underly the growth and shedding of hair. Finally, The Hair Research Society of India was founded as a nonprofit organisation dedicated to research and education in the science of hair. Notably, the HRSI reached milestones in the journey of academic pursuit with the launch of the International Journal of Trichology, and with the establishment of the Hair India conference. Ultimately, the society aims at saving the public from being taken for a ride by quackery, and at creating the awareness that the science of hair represents a subspecialty of Dermatology. In analogy again, the dwarf on which the Nataraja dances represents the demon of egotism, and thus symbolizes Shiva's, respectively, the HRSI's victory over ignorance.

Hair Loss and It’s Homeopathic Approach

Hair loss not only hereditary and age-related but can be the first sign of medical disorder like anemia, hypothyroidism, diabetes, polycystic ovaries, stress and other. Trichology, the specialized science of hair, used in combination with Homoeopathy, is the best suited to diagnose the type of hair loss, it cause and remedy. This paper deals with the homeopathic treatment of hair loss.