Medik8 Crystal Retinal 10 is a high-strength, retinaldehyde-based serum designed to improve the appearance of skin texture, tone, and firmness. Retinaldehyde (or retinal) is a precursor to retinoic acid, but it’s less irritating than traditional retinol, making it suitable for those who want the benefits of retinoids without the common side effects like redness or peeling.
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