Medik8 Crystal Retinal 6 Retinaldehyde Night Serum 0.06% — Firms, Hydrates with Hyaluronic Acid (1 oz)

Medik8 Crystal Retinal 6 is an advanced retinaldehyde night serum formulated for people who have used lower-strength retinoids and are ready to step up. It combines a clinically-driven form of vitamin A with hydrating humectants to target fine lines, uneven texture, and a dull complexion while you sleep. The formula is fragrance-free, gluten-free, and designed to deliver progressive results with controlled comfort.

How does this retinal serum differ from regular retinol?

Retinaldehyde is a direct precursor to the active form of vitamin A that converts to retinoic acid more efficiently than retinol, so it often delivers faster visible improvements while maintaining a gentler irritation profile. Medik8 Crystal Retinal 6 contains 0.06% retinaldehyde, positioned for users who have already adapted to lower strengths.

• Uses retinaldehyde, a more active vitamin A derivative than retinol.
• Concentration targeted at experienced retinoid users (0.06%).
• Formulated to balance efficacy with skin tolerability for night use.

What noticeable benefits can I expect and when?

With consistent nightly use you can expect smoother texture, reduced appearance of fine lines, and a more even-looking surface tone over several weeks. Results vary by individual, but many users observe changes in skin smoothness within a few weeks and continued improvement over months as cell turnover increases.

• Smoother skin texture and diminished fine lines with continued use.
• Improved skin radiance due to resurfacing effects of retinaldehyde.
• Hyaluronic acid and glycerin provide immediate hydration and plumping.

How should I introduce Crystal Retinal 6 into my routine safely?

If you’re already comfortable with retinoid products, Crystal Retinal 6 is typically introduced as your evening active. Start by applying a small, pea-sized amount one to three times per week, then increase frequency as your skin tolerates it. Always combine with sunscreen during the day and avoid mixing strong actives the same night until you know how your skin responds.

• Begin with low frequency (1–3 nights/week) and increase gradually.
• Apply a pea-sized amount to dry skin in the evening after cleansing.
• Use daily SPF each morning to protect renewed skin barrier.

What ingredients support comfort and hydration in this formula?

Alongside retinaldehyde, Medik8 included humectants and antioxidants to support barrier function and reduce potential dryness. Hyaluronic acid and glycerin attract and retain moisture while vitamin E offers antioxidant support to the skin’s surface.

• Hyaluronic acid and glycerin for hydration and immediate plumping.
• Vitamin E helps soothe and protect the skin surface.
• Fragrance-free, gluten-free formulation to reduce sensitizing additives.

Who is this for: Medik8 Crystal Retinal 6 is best suited to those who have successfully used gentler retinoids and want to progress to a more active retinaldehyde strength. It is aimed at adults seeking nightly resurfacing and hydration support while avoiding fragranced or gluten-containing products. If you are new to vitamin A actives, consider starting with a lower Crystal Retinal strength before moving up to the 6 formula.

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.