April 2022 in “Biomedicine & Pharmacotherapy” CXCL12 protein slows down hair growth through its receptor CXCR4. Blocking this can potentially increase hair growth.
July 2020 in “bioRxiv (Cold Spring Harbor Laboratory)” Neutrophil extracellular traps slow down hair follicle healing after injury.
Finasteride treatment slows down hair loss, boosts hair growth, and may increase hair thickness or length, but it can cause side effects like decreased libido and depression in less than 1% of people.
64 citations,
March 2005 in “Journal of Investigative Dermatology” Brain-Derived Neurotrophic Factor (BDNF) slows down hair growth and promotes hair follicle regression.
49 citations,
April 2010 in “International Journal of Cosmetic Science” Hair ages as the cuticle wears down, especially beyond 1 meter from the root, affecting its strength and shine.
25 citations,
December 2011 in “Surface and interface analysis” Bleaching hair causes significant damage by breaking down proteins and fatty acids.
24 citations,
January 2003 in “Journal of Investigative Dermatology” Blocking a specific receptor slows down hair loss in mice.
20 citations,
December 2012 in “Journal of molecular structure” The study found that thioglycolic acid breaks down hair bonds more consistently than l-cysteine, which is less damaging to hair.
13 citations,
December 2017 in “The journal of investigative dermatology/Journal of investigative dermatology” Nicotinamide applied to the scalp can slow down hair growth.
11 citations,
January 1997 in “Skin Pharmacology and Physiology” A certain inhibitor can slow down the decrease in DNA creation in mouse hair follicles, which might help with hair growth.