Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide Versus SkinBetter Science AlphaRet Overnight Cream

This anti-aging serum is formulated around Niacinamide and Ceramide NP to soften the look of wrinkles and refine skin texture. This anti-aging night moisturizer is formulated around Glycolic Acid and Niacinamide to soften the look of wrinkles and refine skin t

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  • This anti-aging serum is formulated around Niacinamide and Ceramide NP to soften the look of wrinkles and refine skin texture.
  • This anti-aging night moisturizer is formulated around Glycolic Acid and Niacinamide to soften the look of wrinkles and refine skin texture.