22 citations,
March 2019 in “Environmental health” Higher fluoride levels may delay puberty in boys.
233 citations,
February 2018 in “Polymers” Chitin and chitosan are useful in cosmetics for oral care, haircare, and skincare, including UV protection and strength improvement.
127 citations,
June 2008 in “British Journal of Clinical Pharmacology” Low doses of some substances can be beneficial, while high doses can be harmful or toxic.
1 citations,
January 2010 in “Springer eBooks” Certain micronutrients may improve hair and nail health, but more research is needed to confirm their benefits.
25 citations,
May 2020 in “Progress in Organic Coatings” Castor oil-based polyurethanes are promising for making safe, strong-performing, eco-friendly hair-styling products.