35 citations
,
May 1986 in “Clinics in endocrinology and metabolism” The exact cause of increased 5α-reductase activity leading to hirsutism in women is still unknown.
8 citations
,
March 2002 in “Archiv Der Pharmazie” The compound 4c effectively inhibits the enzyme linked to hair loss.
March 2014 in “Human Physiology” DHEA improved brain function and behavior in old monkeys and had additional health benefits.
20 citations
,
July 1988 in “Clinics in dermatology” Thioglycolate lotions are the most popular method for permanent waving and hair straightening.
1 citations
,
May 2025 in “Journal of the Indian Chemical Society”
21 citations
,
March 2017 in “Skin research and technology” Removing external lipids from hair reduces moisture and increases strength, while removing internal lipids decreases water permeability.
175 citations
,
December 1980 in “Archives of Dermatology” Trichothiodystrophy is a condition with brittle hair and various physical and mental issues due to low sulfur in proteins.
February 2024 in “Cosmetics” The conclusion is that new plant-based treatments for hair loss may work by targeting certain enzymes.
13 citations
,
September 2013 in “Steroids” The DHT immunoassay is unreliable due to high cross-reactivity with testosterone.
1 citations
,
November 2023 in “Journal of Cutaneous and Aesthetic Surgery” Diode laser treatment is safe and effective for reducing unwanted facial hair in hirsutism.
May 2022 in “Reactions Weekly”
18 citations
,
January 2008 in “Sen'i Gakkaishi” Thioglycolic acid and L-cysteine change hair structure differently during perms, affecting hair strength and curling efficiency.
8 citations
,
January 2011 in “Organic and Biomolecular Chemistry” Minoxidil reacts to nitrosation 7 times more than phenol, mainly due to its -NH₂ groups, leading to the creation of N-nitrosominoxidil.
9 citations
,
January 1999 in “Journal of Liquid Chromatography & Related Technologies” Best results found using acetonitrile, water, and trifluoroacetic acid or methanol mixture.
June 2021 in “International Journal of Ayurvedic Medicine” Phytoconstituents from Cyperus Rotundus may help treat hirsutism by interacting with the 5 α reductase enzyme.
January 2001 in “Biomedical Research” THH and PAD type III appear together early in hair growth, but deiminated THH appears later, suggesting another factor is involved.
January 2007 in “Chinese Journal of Pharmaceuticals” The study successfully identified the structure of finasteride.
7 citations
,
January 2001 in “Comprehensive series in photosciences” UV radiation significantly damages hair, especially with humidity, making it more vulnerable to further damage.
110 citations
,
April 2002 in “The Journal of clinical endocrinology and metabolism/Journal of clinical endocrinology & metabolism” Dihydrotestosterone gel improved well-being and sexual function in older men without negatively affecting prostate health.
37 citations
,
August 2011 in “Journal of Bone and Mineral Research” A girl had rickets due to a gene mutation affecting vitamin D response.
8 citations
,
January 2025 in “Journal of Adolescent Health” Most transgender adolescents continued hormone treatment, with few stopping due to reasons other than returning to their birth gender.
Higher DHEA-S levels are linked to smaller ovarian volume in women with PCOS.
November 2025 in “International Journal of Science and Research Archive” Oxidative dyes damage hair more than semi-permanent dyes, but new technologies help protect hair while coloring.
9 citations
,
September 2017 in “Journal of Investigative Dermatology Symposium Proceedings” Prostaglandin D2 increases testosterone production in skin cells through a process involving reactive oxygen species, and antioxidants may help treat hair loss.
16 citations
,
October 2007 in “Andrologia” DHT is a strong androgen that may pose less risk to the prostate compared to testosterone.
The enzyme Dgat1 is essential for healthy hair and skin by controlling retinoid levels.
277 citations
,
February 2013 in “Science Signaling” Mitochondrial reactive oxygen species are essential for skin and hair development.
43 citations
,
December 2012 in “The Journal of Steroid Biochemistry and Molecular Biology” Progesterone protects neurons from damage by converting to allopregnanolone, which works through GABAA receptors.
June 2008 in “Dermatologic Surgery” Hydrogen peroxide may have both positive and negative effects on wound healing, and its safe concentration for hair transplant surgery is unclear.
January 1981 in “The Journal of Toxicological Sciences” Hydrocortisone 17-butyrate 21-propionate ointment caused reversible side effects like skin issues, weight gain, and organ changes in dogs.