122 citations
,
October 2010 in “Clinica Chimica Acta” Washing hair with water or shampoo lowers cortisol levels in hair.
93 citations
,
January 2007 in “Skin Pharmacology and Physiology” Caffeine in shampoo quickly enters the body through hair follicles.
67 citations
,
April 2007 in “Journal der Deutschen Dermatologischen Gesellschaft” Shampoos are designed to clean and improve hair and scalp health, with specific ingredients for different hair types and conditions.
51 citations
,
January 2014 in “International journal of trichology” Shampoo pH can affect hair health, with alkaline shampoos potentially causing damage and acidic shampoos reducing frizz.
37 citations
,
October 2017 in “Saudi pharmaceutical journal” All evaluated shampoos meet Saudi standards.