Retinaldehyde
Also known as: Retinal, Vitamin A aldehyde, 3-dehydroretinol
A bioactive form of vitamin A that converts to retinoic acid, promoting cell turnover and collagen production.
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Get the appWhat it does
Retinaldehyde is a retinoid intermediate that the skin converts to retinoic acid (tretinoin), the most potent form of vitamin A. This conversion occurs through enzymatic pathways, making it effective yet typically gentler than prescription retinoids. It stimulates cell renewal, supports collagen synthesis, and improves skin texture and appearance.
Benefits
- Promotes skin cell turnover and renewal
- Supports collagen and elastin production
- Improves fine lines, wrinkles, and texture
- Less irritating than tretinoin for many users
- Non-prescription bioactive retinoid
Who it suits
- Mature or aging skin
- Textured or uneven skin
- Acne-prone skin
- Those seeking retinoid benefits with less irritation
How to use
Apply a pea-sized amount to clean, dry skin at night, 2–3 times weekly initially, gradually increasing frequency as skin acclimates. Always follow with a moisturizer and daily SPF 30+ the next morning.
Pairs well with
Hyaluronic acid, Niacinamide, Peptides, Squalane
Be careful pairing with
Vitamin C (L-ascorbic acid at same time), Other potent retinoids
Safety & cautions
Retinaldehyde is generally well-tolerated but can cause dryness, redness, and sensitivity, especially when starting. Use sunscreen daily (SPF 30+) as retinoids increase sun sensitivity. Begin with low concentrations (0.05–0.1%) and use 2–3 times weekly, gradually increasing frequency.
Educational information, not medical advice. Concentration and formulation change how an ingredient behaves.