10 citations
,
January 2024 in “Dermatology Research and Practice” This randomized, double-blind, placebo-controlled study found that a supplement containing hydrolysed collagen and vitamin C (Absolute Collagen) improved skin, scalp, and hair over 12 weeks when taken daily or every other day.
February 2013 in “Journal of the American Academy of Dermatology” The zinc pyrithione hair care system improves scalp hydration and reduces water loss.
1 citations
,
July 2022 in “Functional foods in health and disease/Journal of functional foods in health & disease” This study found that oral probiotic supplementation over 12 weeks may improve hair growth, skin condition, metabolic health, and stress responses in Chinese adults with hair loss and a high risk of metabolic syndrome.
This study found that applying hair conditioner during a permanent wave process in the middle rather than early or late improves tensile strength, hydration, and maintains healthier hair cuticle structure.
January 2012 in “Jounal of The Korean Society of cosmetology” Applying conditioner mid-treatment reduces hair damage during perms.