Medik8 Crystal Retinal 6 retinaldehyde night serum 1 oz — firming, hyaluronic acid

Medik8 Crystal Retinal 6 is a nighttime facial serum containing 0.06% retinaldehyde formulated to visibly smooth texture and support firmer-looking skin while you sleep.

Designed by Medik8 scientists, this concentrated night serum blends retinaldehyde (a potent vitamin A derivative) with hydrating agents like hyaluronic acid, glycerin, and vitamin E. Crystal Retinal 6 sits in the brand’s progressive potency range, intended for users who have completed introductory retinal/retinoid steps and want accelerated resurfacing benefits. The formula aims to refine fine lines and improve skin texture through an evidence-informed retinal delivery while keeping skin hydrated.

How quickly will I notice smoother skin with Crystal Retinal 6?

Results depend on your skin history and tolerance to retinoids, but many users observe improved texture and surface refinement within several weeks of consistent nightly use. Because retinaldehyde works more rapidly than retinol, visible smoothing can appear sooner when the product is used as directed and the skin is gradually acclimated.

• Contains 0.06% retinaldehyde for accelerated conversion to active forms
• Hyaluronic acid and glycerin provide immediate hydration during overnight repair
• Vitamin E supports skin comfort and antioxidant defense
• Best results when introduced after lower-strength retinoids or a buildup period

Is Crystal Retinal 6 suitable for sensitive or new retinoid users?

This strength is intended for people who have already completed introductory retinal or retinoid steps and can tolerate active vitamin A derivatives. If you are new to retinal or have highly reactive skin, begin with a lower Crystal Retinal strength and follow a gradual introduction schedule to minimize irritation.

• Not recommended as the first retinal product for sensitive beginners
• Use every other night initially, increasing frequency as tolerance builds
• Pair with gentle cleansers and daily sunscreen to protect new skin cells
• Stop use if persistent severe irritation occurs and consult a professional

How should I incorporate this night serum into my routine?

Apply Crystal Retinal 6 in the evening after cleansing and before moisturizers. Dispense a pea-sized amount, smooth evenly over face, and allow it to absorb before layering heavier creams. Always use a broad-spectrum sunscreen during the day while using retinal products, as skin can become more light-sensitive.

• Cleanse thoroughly and pat skin dry before application
• Use a small amount—one or two pumps/pea-sized dose for face
• Follow with a hydrating moisturizer if additional barrier support is needed
• Wear SPF daily to protect newly resurfaced skin

What are the key ingredients and their roles in this formula?

Medik8 Crystal Retinal 6 combines a potent retinaldehyde concentration with hydrating and skin-comforting ingredients to deliver resurfacing while minimizing dryness. The formula balances active transformation with moisture support to help maintain skin resilience during use.

• Retinaldehyde 0.06% — a direct vitamin A derivative that converts into the skin’s active forms more quickly than retinol
• Hyaluronic acid — attracts and retains moisture to plump the skin surface
• Glycerin — humectant that supports hydration and softness
• Vitamin E — antioxidant that helps soothe and protect the skin barrier

Who is this for: Medik8 Crystal Retinal 6 is aimed at experienced retinoid users or those who have completed lower-strength retinal introductions and want a stronger nightly serum to accelerate texture and wrinkle-smoothing efforts. It suits people seeking a science-led, fragrance-free night treatment that pairs active retinal technology with hydrating ingredients. If you’re new to retinal or prone to sensitivity, consider starting with a lower strength in the Crystal Retinal range and build tolerance before moving up to the 6 concentration.

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.