January 2016 in “Journal of animal research” Hair can help assess Copper and Zinc levels in dogs.
The new method can tell how hair fibers react to moisture after treatments.
February 2024 in “Bangladesh pharmaceutical journal” The conclusion is that the tested yogurts from Bangladesh are rich in vitamins thiamine and riboflavin, and the testing method is reliable.
2 citations
,
October 2012 in “Experimental Dermatology” Deleting the Sox21 gene changes hair lipid composition and increases cholesterol sulfate levels.
7 citations
,
December 1970 in “Biochimica et Biophysica Acta (BBA) - Protein Structure” 69 citations
,
August 1988 in “Journal of Investigative Dermatology”
December 2025 in “Universal library of medical and health sciences.” Amino acids like arginine and cysteine protect hair during chemical treatments, keeping it strong and less brittle.
32 citations
,
February 2018 in “Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy” Cosmetic residues on individual hairs can be identified and differentiated using ATR FT-IR microspectroscopy.
June 1984 in “Clinical Biochemistry” Hair chromium levels might indicate chromium status and relate to glucose metabolism issues.
1 citations
,
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.
January 2024 in “Journal of cosmetic dermatology” Silibinin-loaded micelles significantly protect hair from UV-B damage.
Zinc levels in hair and blood are linked to enzyme activity in people with certain skin conditions.
3 citations
,
June 1979 in “The Journal of Dermatology” Glycosaminoglycan levels peak early in hair growth and decrease as the cycle progresses.
13 citations
,
September 2020 in “Sensors” Hair follicles have a pH gradient, increasing towards the root.
1 citations
,
July 1990 in “European Journal of Pharmacology” 6 citations
,
May 2022 in “Pharmaceutics” Zinc pyrithione dissolves quickly on the skin and in hair follicles, especially in smaller particles.
74 citations
,
July 1995 in “PubMed” Lowering homocyst(e)ine levels can reverse skin and hair lightening by restoring enzyme activity needed for pigmentation.
January 2004 in “Trace Elements Science” Diabetics have lower chromium, manganese, and copper, but higher iron in their hair.
9 citations
,
July 2014 in “Skin research and technology” Stretching damages Caucasian hair's structure more easily than Asian hair.
December 2025 in “Therapeutic Drug Monitoring” Pulverization extracts more cortisol from hair, but any method works due to individual differences.
72 citations
,
May 1993 in “The Journal of Cell Biology” Trichohyalin in sheep hair follicles may help with structure and calcium binding.
8 citations
,
February 2022 in “International Journal of Dermatology” Lipids are crucial for healthy hair, protecting it from damage and breakage.
30 citations
,
July 2000 in “PubMed” Hair has unevenly distributed proteins and lipids, with lipids mainly in the cuticle and proteins in the cortex and medulla.
April 2025 in “Pharmaceuticals” APA is a promising new compound for repairing damaged hair, outperforming Olaplex® in strength and elasticity.
9 citations
,
January 1966
February 2025 in “Biomimetics” The shampoo straightens hair while keeping it healthy and less damaged.
8 citations
,
March 2019 in “Journal of Biomedical Materials Research Part A” Sulfated hyaluronan in collagen helps hair follicle cells grow and develop better for skin grafts.
22 citations
,
January 2008 in “Physiological Research” Steroid sulfatase is important for activating hormones that affect memory, brain function, and certain diseases, and could be a target for treating hormone-related disorders.
43 citations
,
July 1994 in “Journal of Cell Science” Cross-linked proteins help maintain the structure of hair, feathers, and hagfish teeth.
6 citations
,
January 1971 in “Pathology” Children's hair needs only a little iron for normal growth, regardless of their body's iron levels.