36 citations,
April 2013 in “Cell and Tissue Research” Bone-marrow and epidermal stem cells help heal wounds differently, with bone-marrow cells aiding in blood vessel formation and epidermal cells in hair growth.
13 citations,
September 2017 in “International Journal of Cosmetic Science” Thioglycerol treatment at pH 9.0 with ammonia causes less hair damage and better waving than thioglycolic acid.
August 2021 in “Han'gug miyong haghoeji/Journal of the Korean society of cosmetology” Using natural polyphenol cross-linkers like tannic acid and green tea extract in perm treatments improves curling and protects hair.
March 2016 in “The Korean Society of Beauty and Art” MSG-based hair hardener improves hair thickness, strength, and wave retention after perms.
47 citations,
November 2007 in “The journal of investigative dermatology. Symposium proceedings/The Journal of investigative dermatology symposium proceedings” Healthy hair is shiny, smooth, and has clean ends.
29 citations,
December 1998 in “Seminars in Cutaneous Medicine and Surgery” New treatments for hair loss show promise, especially finasteride for men and a stronger minoxidil formula.
19 citations,
September 2005 in “International Journal of Dermatology” African-American hair's curl pattern significantly affects its strength and elasticity.
5 citations,
January 1983 in “Australian journal of biological sciences” Certain amino acid analogues can inhibit wool and hair growth and affect fiber strength.
4 citations,
July 2022 in “Scientific reports” Crossbreeding improves goat fiber quality, and specific genes affect hair traits and color.
3 citations,
March 2019 in “Post Reproductive Health” Testosterone replacement can help menopausal women with various symptoms, but should be used carefully and is not yet officially licensed in the UK for women.
9 citations,
July 2018 in “Journal of Testing and Evaluation” Adding human hair to sand improves its strength when dry and maintains strength when wet.
The supplement improved hair density and overall hair beauty.
KRTAP6 genes affect wool quality in sheep.
February 1999 in “Strength and Conditioning Journal” Androstenedione, a hormone supplement, doesn't improve muscle or performance and can cause harmful side effects.
45 citations,
December 2006 in “Biopolymers” Permanent waving weakens hair by altering its protein structure.
1 citations,
November 2023 in “Polymer International” The keratin-graphene oxide composite is stronger, more heat resistant, and better at blocking gases than pure keratin, offering an eco-friendly use for waste hair.
January 2025 in “International Journal of Cosmetic Science” Citric acid strengthens and improves damaged hair.
Trichotillometry can measure hair plucking force, aiding alopecia treatment evaluation.
2 citations,
January 2018 in “Biomolecules & therapeutics” Polyamidoamine dendrimers can change the strength and direction of electroosmotic flow through the skin, affecting drug delivery.
7 citations,
January 2018 in “Materials Today: Proceedings” Adding human hair fibers and glass micro-spheres to epoxy improves its wear resistance and strength.
22 citations,
March 2000 in “Clinics in Dermatology” Many treatments for hair loss lack proper testing and FDA approval, so their effectiveness is uncertain.
12 citations,
July 2012 in “Social Psychological and Personality Science” Men with shaved heads are seen as more dominant but older and less attractive.
2 citations,
August 2021 in “Journal of Natural Fibers” Oxidized hair can naturally regain strength and stability over six months.
30 citations,
December 1972 in “Archives of dermatology” The steroid solution can regrow hair but often causes skin issues and doesn't work long-term.
29 citations,
December 2005 in “BioEssays” Wnt/ß-catenin signaling is crucial for regulating skin stem cells and hair growth, with the right levels and timing needed for proper function.
August 2016 in “International journal of scientific research in science, engineering and technology” Adding human hair fibers to soft soil makes it stronger and prevents cracking.
February 2004 in “The New England Journal of Medicine” The book is a comprehensive resource on hair disorders, but lacks information on some conditions.
February 2004 in “The New England Journal of Medicine” The book is a comprehensive and current guide on hair disorders, with minor flaws.
2 citations,
September 2004 in “International Journal of Cosmetic Science” Hair quality is genetically determined and linked to its composition and strength.