Kiehl’s Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide | It’s a potent retinol serum in a daily-strength micro-dose that visibly reduces wrinkles, firms skin, evens skin tone, and smoothes texture with minimal discomfort. Paraben-free, fragrance-free, mineral oil-free, phthalate-free. LTKBeauty