Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide Versus Paula's Choice Resist Barrier Repair Moisturizer with Retinol

This anti-aging serum is formulated around Niacinamide and Ceramide NP to soften the look of wrinkles and refine skin texture. This barrier-repair moisturizer is formulated around Retinol and Ceramide NP to strengthen the skin barrier and soften the look of wr

This source-based comparison does not add ratings or recommend a winner.

  • This anti-aging serum is formulated around Niacinamide and Ceramide NP to soften the look of wrinkles and refine skin texture.
  • This barrier-repair moisturizer is formulated around Retinol and Ceramide NP to strengthen the skin barrier and soften the look of wrinkles.