January 2023 in “Minds at UW (University of Wisconsin)” More research is needed to understand how shampoo chemicals affect hair strength and structure.
September 1980 in “PubMed” Using selenium disulfide on guinea pigs increased hair loss.
9 citations
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January 1981 Nucleophilic reagents break down hair keratin, forming more lanthionine and lysinoalanine than in wool.
1 citations
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January 2017 in “Annals of dermatology/Annals of Dermatology” Mineral levels in hair don't significantly affect the severity of atopic dermatitis in children.
12 citations
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December 1962 in “Journal of Investigative Dermatology”
3 citations
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March 2024 in “Discover Applied Sciences” Spirulina proteins can improve hair smoothness and strength in hair care products.
30 citations
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April 2011 in “Rapid communications in mass spectrometry/RCM. Rapid communications in mass spectrometry” Analyzing hair with this method can help understand and monitor scalp conditions and treatment effects.
1 citations
,
January 2025 in “International Journal of Cosmetic Science” Age-related hair curvature increases due to internal structural changes from grooming.
30 citations
,
March 2017 in “PLoS ONE” Sulfur slightly improved diet estimates for grizzly bears, but hair growth timing varied, affecting results.
January 2015 in “CHINESE JOURNAL OF ANALYTICAL CHEMISTRY (CHINESE VERSION)” A new method accurately measures plant ingredients in hair growth products.
January 2013 in “Wool textile journal” 1 citations
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December 2019 Selenium is essential for health, but too much or too little can cause problems; blood selenium levels are a good measure of intake.
November 2024 in “International Journal of Plant and Environment” Sphenodesme involucrata var. paniculata is a safe and healthy medicinal plant with beneficial nutrients.
18 citations
,
July 2015 in “Journal of cosmetic dermatology” Straightening and coloring hair, especially with sodium hydroxide, greatly increases protein loss.
46 citations
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November 1963 in “Journal of Histochemistry & Cytochemistry” Arginine converts to citrulline in hair follicles as proteins harden.
January 1986 in “Journal of Steroid Biochemistry” Women with severe acne, hirsutism, and androgenic alopecia often have higher levels of certain androgens, but the specific pattern can't be predicted just by looking at symptoms.
The new method can tell how hair fibers react to moisture after treatments.
January 2016 in “Huanjing yu Jiankang Zazhi”
April 2024 in “The Journal of urology/The journal of urology” SRD5A2 methylation in blood can predict how well someone will respond to finasteride treatment.
September 2023 in “International Journal of Cosmetic Science” The shampoo improves hair conditioning without using silicone.
November 2022 in “Journal of Investigative Dermatology” Aging skin cells change their lipid profiles due to stress, affecting skin health.
7 citations
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April 1996 in “British Journal of Dermatology” Hair structural proteins are synthesized sequentially in specific cells, offering a new way to study hair proteins and defects.
10 citations
,
June 2013 in “Talanta” The method ensures accurate finasteride measurement in low-dose drugs, but variability must be checked for each case.
25 citations
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May 2019 in “Cosmetics” 18-MEA and cationic surfactants can restore and maintain hair's hydrophobic nature, improving its beauty and feel.
June 1984 in “Clinical Biochemistry” Hair chromium levels might indicate chromium status and relate to glucose metabolism issues.
7 citations
,
January 1971 in “Archives of Dermatological Research” September 2012 in “European journal of psychotraumatology” A new method accurately measures long-term hormone levels in hair.
4 citations
,
January 2006 in “International Journal of Cosmetic Science” The method shows how hair lipids form specific patterns and their roles in hair structure.
5 citations
,
January 1983 in “PubMed” Human skin releases different steroids, with some coming from sebaceous glands and others from sweat glands.
7 citations
,
January 1959 in “Canadian Journal of Chemistry” Human and horse hair have similar end groups to wool and feathers.