A daytime-to-nighttime retinal serum from Medik8, Crystal Retinal 1 delivers steady retinoid conversion with a silky, fast-absorbing texture. Best suited for those easing into retinoids or with tolerant skin, the formula pairs retinal potency with peptide support and is presented fragrance-free and suitable for routine layering.
Ingredient Safety
No risk6
Low risk84
Moderate risk3