Cos De BAHA Retinol 2.5 Serum (Upgraded Version) Review

(Not sponsored. No affiliate links.) What is it? It is a serum with 2.5% pure retinol. Not diluted, not paired with palmitic acid to render retinyl palmitate. Or Hydroxypinacolone Retinoate aka granactive retinoid. Nope. Old school retinol. Pure one. All about retinol and how to use it I posted here (click to read). Maximum strength … Continue reading Cos De BAHA Retinol 2.5 Serum (Upgraded Version) Review