Estrogen creams have recently been proposed as their application sparks a rapid deposition of keratin in the foreskin. (scientificamerican.com)
So far, scientists have found that different populations of living humans have inherited the Neandertal version of genes that cause diabetes, lupus, and Crohn's disease; alter immune function; and affect the function of the protein keratin in skin, nails, and hair. (sciencemag.org)
This deep conditioner is definitely a must have for anyone with keratin treatments or dry and damaged hair. (mystylebell.com)