AfroKink
Well-Known Member
I don't know if the effects of daily external use of keratin have been investigated, but instead of speculating, you can do a journal search for some empirical evidence. Try Pubmed, Scholars Portal, Ovid, Scopus (my personal favorite), or even that one Google has, what's it called? Google scholar or something.
wise man once said, "when in doubt, check it out"
Lys
wise man once said, "when in doubt, check it out"

Lys