Medik8 Crystal Retinal 6 Retinol Night Serum

Medik8 Crystal Retinal 6 Night Serum is an advanced nighttime vitamin A treatment designed for users who have already built some tolerance to retinoids. It contains 0.06% retinaldehyde (retinal), a potent form of vitamin A that converts to retinoic acid more efficiently than retinol, helping deliver visible results with less irritation for many users.

Who it’s for:

• Suitable for regular retinoid users who have progressed beyond beginner strengths (such as Crystal Retinal 1 or 3).
• Ideal for concerns including early signs of aging, uneven skin tone, pigmentation, and blemishes.
• Not typically recommended as a first-ever retinal product due to its strength.

How to use:

• Apply at night after cleansing, using about one pump over the face and neck.
• Start 2–3 nights per week, then increase frequency as your skin tolerates it.
• Follow with a moisturizer if needed.
• Wear a broad-spectrum sunscreen every morning, as vitamin A products can increase sun sensitivity.