23 citations
,
June 2014 in “International Journal of Cosmetic Science” Glyoxylic acid is a safer alternative to formaldehyde for hair straightening and effectively changes hair structure.
13 citations
,
September 2020 in “Sensors” Hair follicles have a pH gradient, increasing towards the root.
11 citations
,
January 1987 in “Australian Journal of Experimental Agriculture” Protein supplements helped goats maintain weight and increased fleece growth, but not cashmere growth.
40 citations
,
June 2013 in “Journal of cosmetic dermatology” Brazilian keratin treatments can straighten hair but may contain harmful formaldehyde.
13 citations
,
March 2017 in “Skin Research and Technology” Formaldehyde damages curly hair more than glyoxylic acid.