23 citations
,
January 1981 Hair is mostly made of three protein types: helical, high-sulfur, and high-tyrosine.
27 citations
,
April 2004 in “Biochemical and Biophysical Research Communications” Two new gene clusters important for hair formation were found on human chromosome 11.
25 citations
,
September 2014 in “SpringerPlus” Sheep have a unique gene, KAP8-2, that humans don't have, which may affect wool properties.
15 citations
,
January 1988 Hair follicles have unique proteins that vary by species and are influenced by nutrition.
6 citations
,
October 2016 Understanding how keratin structures in hair are arranged and interact is key for creating methods to extract and purify them.
1 citations
,
May 2004 in “Biochemical and Biophysical Research Communications” Two new gene clusters important for hair formation were found on human chromosome 11.
January 2026 in “International Journal of Biological Macromolecules” Small KP peptide improves hair without reducing agents, while larger proteins need them for better results.
May 2025 in “Journal of Developmental Biology” Jawless vertebrates have teeth proteins similar to those in mammalian hair and nails.
26 citations
,
December 1990 in “Journal of Biological Chemistry” Two specific genes are more active during hair growth in mice.
15 citations
,
October 1936 in “Archives of Dermatology” Cystine is crucial for forming keratin in hair, wool, and nails.
7 citations
,
January 2010 in “Animal” Angora goat hair grows faster and produces more protein than cashmere goat hair, and certain hormones and nutrients positively affect hair growth and protein synthesis.
4 citations
,
August 2014 in “Journal of molecular structure” Chemical treatments on bleached black hair change its internal structure by breaking and reforming bonds, and treatments with hydrolyzed eggwhite protein help repair it.
October 2024 in “Cosmetics” ATG effectively reduces hair frizz without damaging hair strength.
30 citations
,
April 2009 in “Mycoses” Microsporum gypseum fungus breaks down keratin in hair by digesting it enzymatically, starting with less keratinized parts.
13 citations
,
March 2006 in “International Journal of Cosmetic Science” The study found that a polymer treatment changes the charge on hair surfaces, making bleached hair smoother and less porous.
10 citations
,
May 1974 in “American journal of diseases of children” The girl had a rare disorder causing mental and physical symptoms, with weak hair and unclear neurological issues.
19 citations
,
March 1961 in “Nature” A fatty acid/protein complex in human hair helps protect it from damage.
October 2021 in “Digital Library of Theses and Dissertations (Universidade de São Paulo)” The active ingredient improves the strength of damaged hair fibers.
76 citations
,
December 2011 in “Journal of Cell Science” Different keratin types have unique amino acid patterns that are evolutionarily conserved.
20 citations
,
March 2013 in “Journal of Lipid Research” The research explains how a human enzyme binds and processes its substrate, which could relate to its role in biological functions and hair loss.
The supplement improved hair density and overall hair beauty.
215 citations
,
March 2018 in “Archives of Toxicology” Tiny pollution particles called PM2.5 can harm skin cells by causing stress, damage to cell parts, and cell death.
9 citations
,
January 1975 in “Munich Personal RePEc Archive (Ludwig Maximilian University of Munich)” Rothmund-Thomson syndrome causes skin changes, hair loss, and slightly high lysine and cystine in urine.
15 citations
,
January 1981 in “Neonatology” Amino acid levels in milk increase with protein and align with key growth stages in Macropus eugenii.
2 citations
,
April 2022 in “PLoS ONE” Vibration treatment may reduce migraine pain by changing cell structures.
51 citations
,
September 2012 in “Gene” The research identified a gene in sheep important for wool quality, which could help improve wool traits.
28 citations
,
January 2016 in “RSC Advances” A non-toxic formula using polycarboxylic acids strengthens and improves hair.
2 citations
,
February 2019 in “bioRxiv (Cold Spring Harbor Laboratory)” The Asiatic lion has very low genetic diversity and unique genetic traits, highlighting the need for its conservation.
7 citations
,
January 1982 in “Acta agriculturae Scandinavica” Mink use L-methionine and L-cystine slightly better than natural amino acids for hair growth, but D-methionine is not effective.
36 citations
,
November 2019 in “Molecular biology and evolution” Cysteine-rich keratins evolved independently in mammals, reptiles, and birds for hard skin structures like hair, claws, and feathers.