At ORY®, we believe you should know what’s in your products and why. This page lists the published research behind what we say about retinol. Each section starts with our claim, then tells you how well the research supports it, then lists the sources so you can read them yourself.
How to read this page Supported — backed by peer-reviewed research or official safety reviews. Supported, with caveats — the research points this way, but mostly from laboratory or animal studies, or at different strengths than ORY® uses. Limited evidence — little or no published research yet. We say so openly. |
1. General Description and Role
Claim: Retinol is vitamin A and one of the most researched anti-aging ingredients available without a prescription. In the skin it is converted to retinoic acid. It helps reduce the look of fine lines and wrinkles and improves the look of skin texture and tone. |
Verification: Supported. The Cosmetic Ingredient Review (CIR) Expert Panel found retinol safe as a cosmetic ingredient in current practices of use, with reported use up to 1%. In a 24-week vehicle-controlled study, 0.4% retinol lotion reduced fine wrinkles on the arms of older adults and increased collagen-related markers in skin biopsies.
Citations:
- Johnson, W., Jr. (2017). Retinol and retinyl palmitate [CIR re-review summary]. International Journal of Toxicology, 36(5 Suppl 2), 53S–58S. https://doi.org/10.1177/1091581817716657
- What it shows: CIR conclusion: safe as used; reported use up to 1%.
- Kafi, R., Kwak, H. S. R., Schumacher, W. E., et al. (2007). Improvement of naturally aged skin with vitamin A (retinol). Archives of Dermatology, 143(5), 606–612. https://pubmed.ncbi.nlm.nih.gov/17515510/
- What it shows: Vehicle-controlled human study of 0.4% retinol over 24 weeks.
- Mukherjee, S., Date, A., Patravale, V., Korting, H. C., Roeder, A., & Weindl, G. (2006). Retinoids in the treatment of skin aging: An overview of clinical efficacy and safety. Clinical Interventions in Aging, 1(4), 327–348. https://doi.org/10.2147/ciia.2006.1.4.327
- What it shows: Review of retinoid clinical efficacy and safety.
- Johnson, W., Jr. (2017). Retinol and retinyl palmitate [CIR re-review summary]. International Journal of Toxicology, 36(5 Suppl 2), 53S–58S. https://doi.org/10.1177/1091581817716657
2. Composition and Production
Claim: Retinol (C₂₀H₃₀O) is the alcohol form of vitamin A, made synthetically for cosmetics. The skin converts it to retinaldehyde and then retinoic acid, which is why it is gentler than prescription tretinoin. It breaks down in light, air, and heat, so ORY® uses stabilized or encapsulated retinol in opaque, airless packaging. |
Verification: Supported. The conversion pathway and instability are well documented.
Citations:
- Mukherjee, S., Date, A., Patravale, V., Korting, H. C., Roeder, A., & Weindl, G. (2006). Retinoids in the treatment of skin aging: An overview of clinical efficacy and safety. Clinical Interventions in Aging, 1(4), 327–348. https://doi.org/10.2147/ciia.2006.1.4.327
- What it shows: Describes the retinol-to-retinoic-acid pathway.
- Zasada, M., & Budzisz, E. (2019). Retinoids: Active molecules influencing skin structure formation in cosmetic and dermatological treatments. Postępy Dermatologii i Alergologii, 36(4), 392–397. https://www.termedia.pl/Retinoids-active-molecules-influencing-skin-structure-formation-in-cosmetic-and-dermatological-treatments,7,37473,0,1.html
- What it shows: Review of retinoid types and how they act on skin structure.
- Mukherjee, S., Date, A., Patravale, V., Korting, H. C., Roeder, A., & Weindl, G. (2006). Retinoids in the treatment of skin aging: An overview of clinical efficacy and safety. Clinical Interventions in Aging, 1(4), 327–348. https://doi.org/10.2147/ciia.2006.1.4.327
3. Skin Type Suitability
Claim: Retinol is best for mature, normal, oily, and combination skin, introduced gradually. Dry skin can use it in a rich base. Sensitive skin may do better with a gentler option such as bakuchiol. |
Verification: Supported. Irritation is the main limit on who can use retinol. In the 24-week study, most participants had mild redness, peeling, dryness, or stinging.
Citations:
- Kafi, R., Kwak, H. S. R., Schumacher, W. E., et al. (2007). Improvement of naturally aged skin with vitamin A (retinol). Archives of Dermatology, 143(5), 606–612. https://pubmed.ncbi.nlm.nih.gov/17515510/
- What it shows: Reports common mild side effects.
- Kong, R., Cui, Y., Fisher, G. J., et al. (2016). A comparative study of the effects of retinol and retinoic acid on histological, molecular, and clinical properties of human skin. Journal of Cosmetic Dermatology, 15(1), 49–57. https://doi.org/10.1111/jocd.12193
- What it shows: Compared retinol with retinoic acid; retinol produced similar skin changes with less irritation.
- Kafi, R., Kwak, H. S. R., Schumacher, W. E., et al. (2007). Improvement of naturally aged skin with vitamin A (retinol). Archives of Dermatology, 143(5), 606–612. https://pubmed.ncbi.nlm.nih.gov/17515510/
4. Hair and Scalp Suitability
Claim: Retinol is not used in ORY® Haircare. |
Verification: Not applicable. There is no clinical evidence supporting cosmetic retinol on the scalp, and it is unstable in shampoos and can irritate.
5. Benefits
Claim: Retinol helps reduce the look of fine lines and wrinkles, smooths the look of skin texture, helps even the look of skin tone, and helps skin look firmer over time. |
Verification: Supported. Human studies show retinol improves fine wrinkles and increases collagen-related markers and skin thickness. A comparison study found retinol produced changes similar to retinoic acid with less irritation. Retinol’s acne research is drug-related; ORY® retinol products are cosmetics and do not make acne claims.
Citations:
- Kafi, R., Kwak, H. S. R., Schumacher, W. E., et al. (2007). Improvement of naturally aged skin with vitamin A (retinol). Archives of Dermatology, 143(5), 606–612. https://pubmed.ncbi.nlm.nih.gov/17515510/
- What it shows: Reduced fine wrinkles and increased procollagen in treated skin.
- Kong, R., Cui, Y., Fisher, G. J., et al. (2016). A comparative study of the effects of retinol and retinoic acid on histological, molecular, and clinical properties of human skin. Journal of Cosmetic Dermatology, 15(1), 49–57. https://doi.org/10.1111/jocd.12193
- What it shows: Histological and clinical comparison with retinoic acid.
- Zasada, M., & Budzisz, E. (2019). Retinoids: Active molecules influencing skin structure formation in cosmetic and dermatological treatments. Postępy Dermatologii i Alergologii, 36(4), 392–397. https://www.termedia.pl/Retinoids-active-molecules-influencing-skin-structure-formation-in-cosmetic-and-dermatological-treatments,7,37473,0,1.html
- What it shows: Review of retinoid effects on skin structure.
- Kafi, R., Kwak, H. S. R., Schumacher, W. E., et al. (2007). Improvement of naturally aged skin with vitamin A (retinol). Archives of Dermatology, 143(5), 606–612. https://pubmed.ncbi.nlm.nih.gov/17515510/
6. Use Across ORY® Product Lines
Claim: Retinol is used mainly in ORY® Skincare night products, with a limited role in Cosmetics. |
Verification: Supported. Retinol is unstable, can irritate, and increases sun sensitivity, so ORY® uses it only in leave-on night-time products and a few low-level cosmetics.
| Product line | Typical level | How ORY® uses it |
| Skincare | 0.1–1% (0.25–0.5% most common) | Night serums, night creams, eye creams (lower strengths), and body lotions. |
| Haircare | Not used | No scalp evidence; unstable; can irritate. |
| Handmade Soap | Not used | Destroyed by heat, air, and alkaline pH. |
| Cosmetics | 0.05–0.25% | Night-wear tints and select foundations, encapsulated. |
Citations:
- Johnson, W., Jr. (2017). Retinol and retinyl palmitate [CIR re-review summary]. International Journal of Toxicology, 36(5 Suppl 2), 53S–58S. https://doi.org/10.1177/1091581817716657
- What it shows: Reported use concentrations up to 1%.
- Johnson, W., Jr. (2017). Retinol and retinyl palmitate [CIR re-review summary]. International Journal of Toxicology, 36(5 Suppl 2), 53S–58S. https://doi.org/10.1177/1091581817716657
7. Pros
Claim: One of the best-studied anti-aging ingredients, available without a prescription, and helps several signs of aging at once. |
Verification: Supported. Supported by decades of research and controlled studies.
Citations:
- Mukherjee, S., Date, A., Patravale, V., Korting, H. C., Roeder, A., & Weindl, G. (2006). Retinoids in the treatment of skin aging: An overview of clinical efficacy and safety. Clinical Interventions in Aging, 1(4), 327–348. https://doi.org/10.2147/ciia.2006.1.4.327
- What it shows: Review of clinical efficacy.
- Kafi, R., Kwak, H. S. R., Schumacher, W. E., et al. (2007). Improvement of naturally aged skin with vitamin A (retinol). Archives of Dermatology, 143(5), 606–612. https://pubmed.ncbi.nlm.nih.gov/17515510/
- What it shows: Controlled human evidence.
- Mukherjee, S., Date, A., Patravale, V., Korting, H. C., Roeder, A., & Weindl, G. (2006). Retinoids in the treatment of skin aging: An overview of clinical efficacy and safety. Clinical Interventions in Aging, 1(4), 327–348. https://doi.org/10.2147/ciia.2006.1.4.327
8. Cons
Claim: Retinol can irritate, increases sun sensitivity, should be avoided during pregnancy and breastfeeding, and breaks down easily. |
Verification: Supported. We list these limits so you have the full picture:
- Irritation. Redness, dryness, peeling, and stinging are common in the first weeks.
- Sun sensitivity. Use at night and apply sunscreen every morning.
- Pregnancy. Avoid during pregnancy and breastfeeding as a precaution.
- Instability. Needs stabilization and opaque, airless packaging.
- Layering. Do not apply with benzoyl peroxide or strong acids at the same time.
Citations:
- Kafi, R., Kwak, H. S. R., Schumacher, W. E., et al. (2007). Improvement of naturally aged skin with vitamin A (retinol). Archives of Dermatology, 143(5), 606–612. https://pubmed.ncbi.nlm.nih.gov/17515510/
- What it shows: Side-effect data.
- Mukherjee, S., Date, A., Patravale, V., Korting, H. C., Roeder, A., & Weindl, G. (2006). Retinoids in the treatment of skin aging: An overview of clinical efficacy and safety. Clinical Interventions in Aging, 1(4), 327–348. https://doi.org/10.2147/ciia.2006.1.4.327
- What it shows: Safety overview of retinoids.
- Kafi, R., Kwak, H. S. R., Schumacher, W. E., et al. (2007). Improvement of naturally aged skin with vitamin A (retinol). Archives of Dermatology, 143(5), 606–612. https://pubmed.ncbi.nlm.nih.gov/17515510/
9. Safety Notes
Claim: Start slowly, use at night, and wear sunscreen daily. |
Verification: Supported. Follow these precautions:
- Start two nights a week and increase as tolerated.
- Use a broad-spectrum sunscreen every morning.
- Do not use if pregnant, trying to become pregnant, or breastfeeding, unless a healthcare provider says it is safe.
- Keep away from eyes, lips, and nostrils; avoid waxing treated areas.
- Stop use if severe redness, burning, or peeling occurs.
Citations:
- Mukherjee, S., Date, A., Patravale, V., Korting, H. C., Roeder, A., & Weindl, G. (2006). Retinoids in the treatment of skin aging: An overview of clinical efficacy and safety. Clinical Interventions in Aging, 1(4), 327–348. https://doi.org/10.2147/ciia.2006.1.4.327
- What it shows: Safety guidance for retinoids.
- Mukherjee, S., Date, A., Patravale, V., Korting, H. C., Roeder, A., & Weindl, G. (2006). Retinoids in the treatment of skin aging: An overview of clinical efficacy and safety. Clinical Interventions in Aging, 1(4), 327–348. https://doi.org/10.2147/ciia.2006.1.4.327
10. Product-line notes
- ORY® Skincare: For external use only. Not for deep or puncture wounds, animal bites, or serious burns.
- ORY® Cosmetics: Lip products are not intended to treat or protect chapped or cracked lips. Do not share applicators, and replace any product that changes color, smell, or texture.
11. References
Peer-reviewed research
- Johnson, W., Jr. (2017). Retinol and retinyl palmitate [CIR re-review summary]. International Journal of Toxicology, 36(5 Suppl 2), 53S–58S. https://doi.org/10.1177/1091581817716657
- Kafi, R., Kwak, H. S. R., Schumacher, W. E., et al. (2007). Improvement of naturally aged skin with vitamin A (retinol). Archives of Dermatology, 143(5), 606–612. https://pubmed.ncbi.nlm.nih.gov/17515510/
- Kong, R., Cui, Y., Fisher, G. J., et al. (2016). A comparative study of the effects of retinol and retinoic acid on histological, molecular, and clinical properties of human skin. Journal of Cosmetic Dermatology, 15(1), 49–57. https://doi.org/10.1111/jocd.12193
- Mukherjee, S., Date, A., Patravale, V., Korting, H. C., Roeder, A., & Weindl, G. (2006). Retinoids in the treatment of skin aging: An overview of clinical efficacy and safety. Clinical Interventions in Aging, 1(4), 327–348. https://doi.org/10.2147/ciia.2006.1.4.327
- Zasada, M., & Budzisz, E. (2019). Retinoids: Active molecules influencing skin structure formation in cosmetic and dermatological treatments. Postępy Dermatologii i Alergologii, 36(4), 392–397. https://www.termedia.pl/Retinoids-active-molecules-influencing-skin-structure-formation-in-cosmetic-and-dermatological-treatments,7,37473,0,1.html
