Medik8 Crystal Retinal 3 0.03% Retinaldehyde Night Serum — Hydrating with Hyaluronic Acid & Vitamin E

Medik8 Crystal Retinal 3 is a beginner-friendly nightly retinaldehyde serum that gently resurfaces skin while hydrating with hyaluronic acid and protecting with vitamin E.

Designed as the entry strength in Medik8’s Crystal Retinal range, this 0.03% retinaldehyde serum targets texture, fine lines and uneven tone during sleep without the strong irritation some retinoids cause. The formula combines a stable vitamin A derivative with humectants and antioxidant support so skin appears smoother and feels more supple over weeks of consistent use.

How does Crystal Retinal 3 work overnight?

When applied in the evening, retinaldehyde converts into active retinoic acid in the skin more efficiently than retinol, encouraging cellular turnover and surface renewal. The blend includes hyaluronic acid and glycerin to draw moisture into the skin as renewal processes occur, while vitamin E helps support barrier resilience.

• 0.03% retinaldehyde for gentle resurfacing
• Hyaluronic acid and glycerin for immediate and lasting hydration
• Vitamin E antioxidant support to help maintain skin comfort
• Formulated for progressive tolerance and minimal irritation

Who should choose this strength and how do I introduce it?

Crystal Retinal 3 is aimed at people new to vitamin A treatments or those who prefer a milder nightly step before advancing to stronger concentrations. Start by applying a small pump twice weekly, gradually increasing to nightly use as your skin builds tolerance.

• Recommended starting frequency: 1–2 times per week
• Increase use every 1–2 weeks based on comfort
• Pair with daytime SPF and gentle cleansers
• Avoid combining immediately with other strong actives until tolerance is known

What results can you expect and when?

Visible changes such as smoother texture and a more refined appearance typically develop with consistent nightly use over several weeks. Because retinaldehyde works steadily, many users notice progressive softening of fine lines and improved clarity as the skin’s surface renews.

• Early hydration and smoother feel within days
• Texture and tone improvements within 4–12 weeks
• Best results with continued, protected daytime routine

How should Crystal Retinal 3 fit into my routine safely?

Use this serum at night after cleansing and before moisturizing. Follow with a restorative moisturizer if needed, and always apply a broad-spectrum sunscreen during the day—retinoids can increase light sensitivity during treatment build-up.

• Apply to dry, clean skin in the evening
• Layer moisturizer on top if additional hydration is required
• Use daily SPF in the morning without fail
• Introduce gradually to monitor tolerance

Who is this for: Medik8 Crystal Retinal 3 suits anyone beginning a retinaldehyde regimen or those who want gentle nightly renewal with lower irritation risk. It’s appropriate for most skin types seeking smoother texture and preventative age-management when paired with a sun protection strategy and patient, consistent use.

Ingredients

Water, Caprylic/Capric Triglyceride, Glycerin, Isododecane, Cetearyl Olivate, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Cetearyl Alcohol, PPG-12/SMDI Copolymer, Sorbitan Olivate, Tocopheryl Acetate, Cyclodextrin, Squalane, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Hydroxyacetophenone, 3-O-Ethyl Ascorbic Acid, Hydroxypropyl Methylcellulose, Sodium Hyaluronate, Phenoxyethanol, Tetrahexyldecyl Ascorbate, Daucus Carota Sativa (Carrot) Seed Oil, Retinal, Rubus Chamaemorus Seed Oil, Alumina, Isostearic Acid, Lecithin, Polyglyceryl-3 Polyricinoleate, Lonicera Japonica (Honeysuckle) Flower Extract, Lonicera Caprifolium (Honeysuckle) Flower Extract, Polyhydroxystearic Acid, Stearic Acid, Sodium Polyaspartate, Pentylene Glycol, Citric Acid, Polysorbate 60, Disodium EDTA, Ethylhexylglycerin, BHT, Sorbitan Isostearate, Vanilla Planifolia Fruit Extract, Dipteryx Odorata Bean Extract, Coumarin, Red 4, Titanium Dioxide/CI 77891.