Tretinoin
Also known as: all-trans retinoic acid, ATRA, retinoic acid
Prescription vitamin A metabolite that increases cell turnover and collagen production for anti-aging and acne.
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Get the appWhat it does
Tretinoin is the active acid form of vitamin A, binding directly to retinoic acid receptors in skin cells to accelerate cell turnover, boost collagen synthesis, and normalize sebum production. It requires a prescription and comes in multiple strengths (0.025%–0.1%) as creams, gels, or solutions. Effects develop over weeks to months and require consistent use.
Benefits
- Reduces fine lines, wrinkles, and improves skin texture over time
- Effective for moderate to severe acne and post-inflammatory hyperpigmentation
- Stimulates collagen remodeling and improves skin firmness
- Normalizes pore size and reduces sebaceous gland activity
- Evidence-backed for photodamage and sun-damaged skin reversal
Who it suits
- Mature or photoaged skin
- Moderate to severe acne and oily skin
- Those seeking clinical anti-aging results
- Hyperpigmentation and melasma (under dermatologist guidance)
How to use
Start with the lowest strength (0.025%) applied 2–3 times weekly to clean, completely dry skin, gradually increasing frequency as tolerated over 8–12 weeks. Use pea-sized amounts and wait 20 minutes after cleansing to minimize irritation. Always use SPF 30+ daily.
Pairs well with
Gentle hydrating moisturizers and ceramides, Sunscreen (essential), Niacinamide (may reduce irritation), Hyaluronic acid or glycerin (humectants)
Be careful pairing with
Vitamin C (stabilized forms may be used cautiously; separate timing recommended), AHAs/BHAs (too irritating; use only after adaptation), Benzoyl peroxide (may degrade tretinoin; separate AM/PM use if necessary)
Safety & cautions
Tretinoin is a prescription medication requiring dermatologist supervision. It causes significant irritation, dryness, peeling, and initial purging; start low (0.025%) and increase slowly. UV sensitivity is elevated; daily SPF 30+ is mandatory. Avoid during pregnancy/breastfeeding; contraindicated with certain medications. Not suitable for sensitive or compromised skin barriers.
Educational information, not medical advice. Concentration and formulation change how an ingredient behaves.