88 citations
,
July 1958 in “Nature” Citrulline was found in hair follicle proteins for the first time.
5 citations
,
February 1998 in “Polymer” Human hair keratin has a 40% α-helix structure that changes to a random coil in 8 M urea.
12 citations
,
July 2017 in “International Journal of Cosmetic Science” N‐AOHPA is a promising alternative to traditional surfactants for better hair conditioning.
18 citations
,
June 2016 in “Clinical and Experimental Dermatology” Increasing isoleucine intake improved skin and health issues in an infant with maple syrup urine disease.
49 citations
,
January 1972 in “Biochimica et Biophysica Acta (BBA) - Protein Structure”
January 2011 in “Yearbook of Dermatology and Dermatologic Surgery” Hair relaxers are linked to reduced cystine levels and potential hair damage.
February 2025 in “Animals” Amino acid-complexed trace minerals improve hair quality and activity in senior dogs.
69 citations
,
January 2021 in “Journal of Biological Chemistry” Plant-derived amino acids can help develop new antimicrobial drugs.
305 citations
,
March 2008 in “AJP Endocrinology and Metabolism” SSAT is a key enzyme affecting cell growth and metabolism, with potential but risky use in disease treatment.
August 2022 in “Clinical and Experimental Dermatology” Amino acid supplements may not be necessary for all women with chronic hair loss.
10 citations
,
January 2012 in “International Journal of Cosmetic Science” Thioglycolic acid mainly affects the unordered areas in hair structure.
49 citations
,
May 1974 in “Biochimica et Biophysica Acta (BBA) - Protein Structure” Transamidases are present in the epidermis but their exact role is unclear.
April 2026 in “Applied Sciences” Succinic acid helps improve skin conditions like acne and rosacea.
May 2010 in “Europe PMC (PubMed Central)” Near-infrared probes can safely and effectively image cysteine protease activity for disease diagnosis.
9 citations
,
February 2016 in “Anatomical Science International” Hair proteins change location and structure as hair cells mature.
January 1995 in “Seoul National University Open Repository (Seoul National University)” SSO helps in skin protection and keratinization.
4 citations
,
January 2017 in “Biological & pharmaceutical bulletin” Inhibiting ALOX12 can help hair cuticle maturation by increasing S100A3 citrullination.
January 2026 in “Beilstein Journal of Organic Chemistry” A new, efficient method creates sulfinimidate esters from sulfenamides and alcohols without metals.
July 2023 in “Jurnal Ilmu Kesehatan Hewan” Sulfur-based treatments combined with simparica effectively treat scabies in puppies.
9 citations
,
June 1947 in “Analytical Chemistry” Cold waving solutions quickly reduce cystine to cysteine in hair.
111 citations
,
August 2002 in “Journal of Medicinal Chemistry” New compounds were made that block an enzyme linked to breast cancer better than existing treatments.
38 citations
,
February 1989 in “Journal of Investigative Dermatology”
29 citations
,
August 2005 in “Biopolymers” L-cysteine slows down the breaking of bonds in hair due to electrostatic interactions.
January 2020 in “대한미용학회지” Permanent hair dye reduces sulfur content in both gray and black-brown hair.
40 citations
,
April 1999 in “Journal of Histochemistry & Cytochemistry” S100A3 protein is mainly found in specific parts of human hair cells.
30 citations
,
March 2017 in “PLoS ONE” Sulfur slightly improved diet estimates for grizzly bears, but hair growth timing varied, affecting results.
23 citations
,
January 1981 Hair is mostly made of three protein types: helical, high-sulfur, and high-tyrosine.
23 citations
,
November 1964 in “Journal of Dairy Science” High molybdenum and sulfate sulfur levels can cause health issues in cattle, but adding copper helps.
12 citations
,
January 1994 in “Dermatology” The patient's hair had unique damage and a lower sulfur-to-nitrogen ratio compared to relatives, but not compared to healthy controls.
Hair analysis can help identify specific minerals and amino acids linked to various diseases.