Dermelect Rejuvenail Fortifying Nail & Cuticle Treatment ($18) is a new anti-aging nail treatment that is the first to utilize protein-peptide technology to hydrate and strengthen nails and relieve ragged, painful cuticles. The breakthrough peptide ProSina delivers keratin protein directly to the nail bed encouraging stubborn nails to grow while improving their resilience, according to the company. More info: www.dermelect.com