Medik8 Crystal Retinal 6 Night Retinal Serum 1 oz - 0.06% Retinaldehyde for Smoother Texture & Hydration

Designed as a progressive-strength retinal serum, Crystal Retinal 6 delivers a more active dose for skin that has acclimated to lower concentrations. Formulated by Medik8 scientists, this 1 oz night serum blends retinaldehyde (a vitamin A derivative), hyaluronic acid, glycerin, and vitamin E to support smoother-looking skin without introducing unnecessary fragrances or gluten. Use it in the evening as part of a gradual retinoid routine to help improve surface texture and reduce the appearance of fine lines.

How does Crystal Retinal 6 work on skin texture and wrinkles?

Retinaldehyde is a direct precursor to retinoic acid that can convert in the skin to an active form of vitamin A, supporting cellular turnover and surface renewal. At 0.06% strength, this formula is positioned for users who have built tolerance to milder retinoids and want a more noticeable resurfacing effect.

• Contains 0.06% retinaldehyde for progressive resurfacing.
• Supports exfoliation-like renewal to refine pores and smooth lines.
• Includes humectants to maintain moisture while skin renews.

Can I use this with other hydrators and actives?

Yes — Crystal Retinal 6 is compatible with many hydrating and antioxidant products, but layering active treatments should be done mindfully. Avoid concurrent use of other strong exfoliating acids or prescription retinoids until you know how your skin tolerates the serum.

• Pairs well with hyaluronic acid serums and gentle moisturizers.
• Vitamin E in the formula offers antioxidant support alongside retinal.
• Introduce slowly and skip other potent acids or retinoids initially.

What is the recommended routine and frequency for beginners?

Because Crystal Retinal 6 is a mid-to-advanced strength, it’s ideal once your skin has adapted to lower retinal strengths or retinol. Start by applying a small amount every other night, then increase frequency as tolerated; always follow with a moisturizer and daytime SPF.

• Start with every-other-night applications if new to this concentration.
• Apply a pea-sized amount to dry skin after cleansing in the evening.
• Use daily sunscreen during daytime to protect renewing skin.

What ingredients support comfort and hydration in this serum?

To balance retinal's resurfacing action, Medik8 includes hydrating agents that reduce dryness and support the skin barrier. Hyaluronic acid and glycerin attract and hold moisture, while vitamin E helps maintain skin comfort and antioxidant balance.

• Hyaluronic acid for immediate and lasting hydration.
• Glycerin strengthens moisture retention and smoothness.
• Vitamin E provides antioxidant support and skin comfort.

Who is this for: Crystal Retinal 6 suits experienced retinoid users or those who have successfully completed a lower-strength retinal program and want a step-up in efficacy. It’s formulated for people aiming to refine texture and reduce the look of fine lines while maintaining hydration; not intended for those with active irritation, pregnant or nursing individuals, or first-time retinoid users without a prior build-up phase.

Ingredients

Water, Caprylic/Capric Triglyceride, Glycerin, Isododecane, Cetearyl Olivate, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Cyclodextrin, Cetearyl Alcohol, Sorbitan Olivate, Tocopheryl Acetate, Squalane, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Hydroxyacetophenone, 3-O-Ethyl Ascorbic Acid, Phenoxyethanol, Hydroxypropyl Methylcellulose, Sodium Hyaluronate, Tetrahexyldecyl Ascorbate, Rubus Chamaemorus Seed Oil, Pentylene Glycol, Daucus Carota Sativa (Carrot) Seed Oil, Retinal, Alumina, Isostearic Acid, Lecithin, Sodium Polyaspartate, Polyglyceryl-3 Polyricinoleate, Lonicera Japonica (Honeysuckle) Flower Extract, Lonicera Caprifolium (Honeysuckle) Flower Extract, Polyhydroxystearic Acid, Disodium EDTA, Ethylhexylglycerin, Stearic Acid, Polysorbate 60, Sorbitan Isostearate, BHT, Vanilla Planifolia Fruit Extract, Dipteryx Odorata Bean Extract, Coumarin, Red 4, Titanium Dioxide/CI 77891.