A vitamin A alcohol used in skincare for the appearance of fine lines and uneven pigmentation.
Sources: 1, 2, 3, 4, 5Vitamin A alcohol, All-trans-retinol
Avoid during pregnancy
Avoid during pregnancy as a topical-retinoid class precaution. This recommendation does not imply that cosmetic retinol and oral isotretinoin have the same exposure or measured risk. Breastfeeding use needs separate clinical advice.
Sources: 3Limited evidence
Retinol
What it does
Tested retinol preparations can improve photoaging-related appearance. The evidence concerns particular formulations, strengths and exposure periods.
Sources: 1, 2, 3, 4, 5Good for
- Fine-line appearance
- Photoaging-related uneven tone
How to use it
Follow the finished product's instructions, introduce gradually as tolerated and use moisturizer and daytime sun protection. Do not apply multiple retinoids simply to increase intensity.
Sources: 1, 2, 3, 4, 5Who should be careful
Avoid in pregnancy. Dryness, stinging and peeling can limit tolerance, particularly with other irritating treatment steps; breastfeeding and prescription combinations need individual advice.
Sources: 1, 2, 3, 4, 5Pairs well with
No supported pairings have been documented for this record.
Keep apart from
- Additional retinoids or irritating exfoliation steps
Adding multiple potentially irritating treatments can make a routine harder to tolerate.
A tolerance precaution, not a universal chemical incompatibility. Follow the finished product label and clinician's plan.
Expert opinionSources: 2
Usage, safety and formulation details
Mechanism of action
Skin can convert retinol through retinaldehyde to retinoic acid. Delivery, conversion and tolerability make product performance more complex than a percentage comparison.
Sources: 1, 2, 3, 4, 5Potential adverse effects
Irritation, dryness and peeling can occur; evidence from a combination formula cannot establish the isolated ingredient's tolerance.
Sources: 1, 2, 3, 4, 5Formulation considerations
Light, oxygen, vehicle and packaging affect stability. Check the actual retinol content and vitamin A-equivalent rules rather than equating all retinoid percentages.
Sources: 1, 2, 3, 4, 5Pregnancy and breastfeeding
Avoid during pregnancy
Avoid during pregnancy as a topical-retinoid class precaution. This recommendation does not imply that cosmetic retinol and oral isotretinoin have the same exposure or measured risk. Breastfeeding use needs separate clinical advice.
Sources: 3Safety tags
- Fragrance allergen
- Not assessed
Not separately assessed in this draft.
- Essential oil
- Not assessed
Not separately assessed in this draft.
- Drying alcohol
- Not assessed
Not separately assessed in this draft.
What remains uncertain
- Exact concentration, final pH and the full composition of any unprovided finished product
Clinical evidence and research (1 studies)
Clinical evidence
Evidence for its main benefitLimited evidence
A cited study is entered below. Its formulation, exposure and limitations must be considered before applying the results to another product.
Sources: 1, 2, 3, 4, 5Bakuchiol and retinol for facial photoageing: randomized trial
- Design
- Randomized, double-blind comparison with bakuchiol
- Population
- 44 participants
- Studied concentration
- 0.5% retinol once daily versus 0.5% bakuchiol twice daily
- Duration
- 12 weeks
Both groups improved measured wrinkle and pigmentation appearance; retinol users reported more scaling and stinging.
Limitations: Small study with different application schedules and no vehicle-only group; not proof that all retinol products perform alike.
Randomised clinical trialSources: 1Regulation and ingredient label names
Regulatory information
European Union
Regulation (EU) 2024/996: retinol, retinyl acetate and retinyl palmitate
Vitamin A equivalents, product-category restrictions and required labeling need checking against the current consolidated rules. The cited amendment does not assess retinaldehyde or establish pregnancy suitability.
Sources: 5Names on ingredient lists
retinol
Chemical identity and molecular structure
Chemical information
Chemical structure
| Detail | Value | Source |
|---|---|---|
| PubChem CID | 445354 | PubChem compound 445354: chemical identity |
| molecular formula | C20H30O | PubChem compound 445354: chemical identity |
| molecular weight | 286.5 g/mol | PubChem compound 445354: chemical identity |
Content updated 9 November 2026.
Sources (6)
Scientific sources
- Bakuchiol and retinol for facial photoageing: randomized trialrandomized human trial · 2019
- AAD: Retinoid or retinol use and skin toleranceclinical guidance
- AAD: Pregnancy skincare and ingredients to avoidclinical guidance
- ACOG: Skin conditions during pregnancyclinical guidance
- Commission Regulation (EU) 2024/996: vitamin A, alpha-arbutin, arbutin and certain potential endocrine disruptorsregulation · 2024
- PubChem compound 445354: chemical identitychemical identity
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