July 2023 in “Media Dermato Venereologica Indonesiana” Vitamin D supplements should be used cautiously in sarcoidosis patients, with regular monitoring to avoid high calcium levels.
2 citations
,
January 2001 in “Biomedical Research” Trichohyalin and peptidylarginine deiminase type III are found together in rat hair follicles, with trichohyalin being modified after expression.
2 citations
,
September 2004 in “International Journal of Cosmetic Science” Hair quality is genetically determined and linked to its composition and strength.
4 citations
,
July 1994 in “Clinics in Dermatology” Eosinophilia-myalgia syndrome, linked to contaminated L-tryptophan supplements, caused severe symptoms and some deaths, with long-term effects in survivors.
71 citations
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June 2008 in “Annals of Internal Medicine” Excessive selenium from supplements can be harmful.
May 2025 in “Journal of Developmental Biology” Jawless vertebrates have teeth proteins similar to those in mammalian hair and nails.
6 citations
,
September 2010 in “Pigment Cell & Melanoma Research” We know less about human hair pigmentation than mouse coat color, but pH and cysteine levels are key factors.
January 2024 in “Natural product research” The bulb and shoot of Allium longisepalum contain various compounds with potential health benefits, including antioxidant and anti-inflammatory properties.
9 citations
,
March 2022 in “Antioxidants” Synthetic antioxidants are effective, cheap, and stable, with some like zinc and cholecalciferol reducing child and cancer deaths, but the safety of additives like BHA, BHT, TBHQ, and PEG needs more research.
December 2025 in “Asian Journal of Beauty and Cosmetology” Agarwood from Laos and Thailand shows potential for anti-inflammatory and cosmetic uses.
34 citations
,
July 1958 in “Biochimica et Biophysica Acta”
April 2018 in “Journal of Investigative Dermatology” Sensitive scalp has higher pH, more redness, abnormal sebum, and altered bacterial makeup.
Modern shampoos use a mix of surfactants and other ingredients to clean, reduce irritation, and improve performance.
3 citations
,
December 2019 in “Biomaterials Research/Biomaterials research” Calcium and magnesium in hair increase with age and are higher in adult women.
November 2025 in “Journal of Investigative Dermatology” Alopecia Areata may involve reduced antioxidant defenses in hair follicles, affecting stem cell function.
September 2025 in “Animals” Key proteins and pathways are crucial for wool fineness, but more research is needed.
April 2012 in “KSBB Journal” Minoxidil analogs can be improved for hair growth inhibition by modifying specific parts of their structure.
7 citations
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December 1956 in “Science” 1 citations
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December 1956 in “Science” 1 citations
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June 2009 in “Integrated Environmental Assessment and Management” Selenium is essential in small amounts but toxic in excess, requiring careful management.
September 2023 in “Food and chemical toxicology” High doses of some selenium supplements caused liver and reproductive harm in rats.
7 citations
,
January 1989 in “Archives of Dermatological Research” The side gland of Suncus murinus is a good model for studying human sebaceous glands.
10 citations
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August 2013 in “Experimental Dermatology” Hairless protein and putrescine regulate each other, affecting hair growth and skin balance.
Linoleic acid is essential for healthy skin, and while deficiency is rare in Western societies, it can cause dry, scaly skin and hair loss.
1 citations
,
September 2019 in “Steroids” Two new mutations in the AR gene linked to severe androgen insensitivity were found.
33 citations
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October 2012 in “Journal of Morphology” Reptile skin hardens by layering beta-proteins on keratin.
6 citations
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August 1937 in “Journal of the Society of Chemical Industry” 3 citations
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August 1988 in “PubMed” September 2016 in “Journal of Engineering and Technological Science” Women with telogen effluvium have an imbalance in thiol-disulphide, suggesting oxidative stress may contribute to hair loss.
5 citations
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October 2001 in “British Journal of Ophthalmology” Sulphadiazine can cause crystals to form in urine.