Medik8 Crystal Retinal 20 Retinaldehyde Night Serum 1 oz — Firming, Hydrating (Hyaluronic Acid)

Medik8 Crystal Retinal 20 is a high-strength night facial serum containing 0.20% retinaldehyde to help accelerate skin cell renewal while supporting hydration with hyaluronic acid and vitamin E.

This potent night serum from Medik8 is formulated for experienced retinoid users who want an advanced retinaldehyde treatment that targets visible signs of aging while maintaining skin moisture. The formula blends retinaldehyde — a more active vitamin A derivative — with hyaluronic acid, glycerin and vitamin E to provide resurfacing benefits alongside humectant and antioxidant support. It comes in a 1 oz pump designed for nighttime use as part of a progressive retinal program.

How does Crystal Retinal 20 differ from retinol or lower-strength retinal products?

Crystal Retinal 20 uses 0.20% retinaldehyde, which is chemically closer to the skin’s active vitamin A form than retinol, offering faster results in skin cell turnover while still being designed for topical use. Compared with lower-strength Crystal Retinal formulas, this version is intended for users who have already adapted to retinoids and want a stronger effect.

• Contains 0.20% retinaldehyde for advanced resurfacing activity.
• Faster conversion to active retinoic form than retinol, potentially accelerating visible results.
• Formulated with hydrating agents to counter dryness common with strong vitamin A derivatives.

What benefits can I expect when using this night serum?

When used consistently at night, expect improved skin texture and reduced appearance of fine lines as the retinaldehyde supports cellular renewal. The humectants and vitamin E help preserve skin barrier comfort and provide antioxidant support during the overnight repair window.

• Smoother skin surface and refined texture with regular use.
• Support for smaller-looking fine lines through accelerated skin turnover.
• Hyaluronic acid and glycerin attract and retain moisture for balanced hydration.

How should I incorporate Crystal Retinal 20 into my routine safely?

Introduce Crystal Retinal 20 only after you have acclimated to lower-strength retinoids or completed Medik8 Crystal Retinal 10. Apply a pea-sized amount to dry, clean skin in the evening, and follow with a moisturizer; always use sunscreen during the day to protect newly resurfaced skin.

• Start gradually if moving up from a lower strength — every other night then increase frequency.
• Use a gentle cleanser and allow skin to dry before application to reduce irritation.
• Pair with daytime SPF 30+; avoid combining with other strong actives without guidance.

What key ingredients are included and what do they do?

The formula centers on retinaldehyde for renewal, with hyaluronic acid and glycerin to hydrate and plump the skin surface, plus vitamin E for antioxidant support. Medik8 designs the serum to balance potent resurfacing activity with moisturizing and skin-calming components.

• Retinaldehyde (0.20%): advanced vitamin A derivative for renewal.
• Hyaluronic acid: attracts moisture and supports skin elasticity.
• Glycerin: humectant that helps maintain hydration levels.
• Vitamin E: antioxidant that supports barrier health.

Who is this for? Medik8 Crystal Retinal 20 suits experienced retinoid users seeking a stronger nighttime resurfacing treatment and are comfortable with gradual introduction and careful sun protection. It is not recommended for first-time retinoid users, pregnant or breastfeeding individuals, or those with very sensitive or actively irritated skin without professional advice. If you are progressing through Medik8’s retinal program and want a maximum-strength option to support firmer, smoother-looking skin, Crystal Retinal 20 offers a laboratory-designed blend of retinaldehyde plus hydrating ingredients in a 1 oz pump.

Ingredients

Aqua (Water), Caprylic/Capric Triglyceride, Cyclodextrin, Glycerin, Isododecane, Eclipta Prostrata Extract, Cetearyl Olivate, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Cetearyl Alcohol, PPG-12/SMDI Copolymer, Sorbitan Olivate, Tocopheryl Acetate, Squalane, Rubus Chamaemorus (Cloudberry) Seed Oil, Melia Azadirachta Leaf Extract, Sodium Hyaluronate, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Phenoxyethanol, Pentylene Glycol, Retinal, Hydroxypropyl Methylcellulose, Daucus Carota Sativa (Carrot) Seed Oil, Titanium Dioxide,Sodium Polyaspartate, Climbazole, Moringa Oleifera Seed Oil, Alumina, Lonicera Japonica (Honeysuckle) Flower Extract, Isostearic Acid, Lecithin, Polyglyceryl-3 Polyricinoleate, Polyhydroxystearic Acid, Stearic Acid, Ethylhexylglycerin, Lonicera Caprifolium (Honeysuckle) Flower Extract, Tetrahexyldecyl Ascorbate, Disodium EDTA, 3-O-Ethyl Ascorbic Acid, Hydroxyacetophenone, Polysorbate 60, Sorbitan Isostearate, Dipteryx Odorata (Tonka) Bean Extract, BHT, Vanilla Planifolia (Vanilla) Fruit Extract, Decylene Glycol, 1,2-Hexanediol, Coumarin.