Hair coloring and bleaching can permanently break down hair protein and temporarily change its properties.
4 citations,
March 2014 in “PubMed” Monoethanolamine-based hair colorants can cause more damage to hair than ammonia-based ones.
9 citations,
January 2010 The herbal hair dye is a safe and eco-friendly alternative to conventional dyes.
68 citations,
February 2011 in “European Journal of Pharmaceutics and Biopharmaceutics” Keratin films from human hair can potentially replace human nail plates for drug testing.
6 citations,
August 2020 in “Journal of Pharmaceutical Innovation” Nanoemulgel improves hair growth and quality using finasteride without irritation.