There are enough peptides in Sephora’s skin- and hair-care aisles to fill a small ocean. Or at least an Olympic-size pool. The products boast of their ability to stimulate collagen and elastin and reduce inflammation, fine lines, split ends, and the general damage that’s a side effect of living in an imperfect world. Are peptides all they’re cracked up to be? Our cosmetic chemist puts them under the microscope.
In general, I don’t care for peptides as a class of compounds because, like collagen, most are too big to be absorbed.
