Few skin-care routines are as easy as 1-2-3, but with DefenAge, Dr. Bucay suggests following the rule of thirds. This trio contains defensins, which are “peptides that turn to a specific type of dormant stem cell found in a region of the hair follicle,” which then divides to produce new epidermal cells. For maximum efficacy, DefenAge offers a mega-powerful three-step regimen: a two minute mask to exfoliate and clear out pores, a serum to brighten the appearance of skin and firm it up, and a cream for hydration and reparation of the moisture barrier.