Retinol

Retinoid (Over-the-Counter)

Also known as: Vitamin A, Vitamin A1, Retinyl alcohol

Description

Retinol is an over-the-counter retinoid and a precursor to retinoic acid (tretinoin). It must be converted in the skin through two enzymatic steps — first to retinaldehyde, then to retinoic acid — to exert its biological effects. Though less potent than prescription retinoids, it is widely used for anti-aging and acne due to its accessibility and generally milder side-effect profile. [Kafi 2007] [Zasada 2019]

Mechanism of Action

After topical application, retinol is converted to retinaldehyde by alcohol dehydrogenases, then to all-trans retinoic acid by retinaldehyde dehydrogenases. The active retinoic acid binds nuclear RAR/RXR receptors, modulating gene expression to increase cell turnover, stimulate collagen synthesis, and reduce matrix metalloproteinase activity. The multi-step conversion results in a slower, more sustained release of active retinoic acid compared to direct tretinoin application. [Kong 2016]

Indications

Available Concentrations

0.025%0.05%0.1%0.3%0.5%1%

Side Effects

Contraindications

  • Pregnancy [Zaenglein]
  • Breastfeeding [Zaenglein]
  • Eczematous or broken skin
  • Concurrent use with other strong exfoliants (caution)

Pregnancy Category

X (retinoids as a class) [Zaenglein 2016]

Found In

Cosmetics containing Retinol

CeraVe Resurfacing Retinol SerumCeraVeFixderma Reticuram Retinol SerumFixdermaMinimalist Cream Sunscreen SPF 50 PA++++MinimalistMinimalist 0.3% Retinol + Q10 Face SerumMinimalistPilgrim 0.5% Retinol + Vitamin C SerumPilgrimPlum 1% Retinol Anti-Aging Night Face Serum with BakuchiolPlumYellow Peel (Retinol 5% + Lactic + Ascorbic)Dermatology-grade

Related Conditions

Acne Vulgaris OTC retinoid — milder alternative to tretinoin Melasma Milder retinoid for maintenance therapy Photoaging OTC retinoid for milder anti-ageing regimens Keratosis Pilaris Normalises follicular keratinisation

References

  1. Kafi R, Kwak HS, Schumacher WE, et al. "Improvement of naturally aged skin with vitamin A (retinol)." Arch Dermatol, 2007. doi:10.1001/archderm.143.5.606
  2. Kong R, Cui Y, Fisher GJ, et al. "A comparative study of the effects of retinol and retinoic acid on histological, molecular, and clinical properties of human skin." J Cosmet Dermatol, 2016. doi:10.1111/jocd.12193
  3. Zaenglein AL, Pathy AL, Schlosser BJ, et al. "Guidelines of care for the management of acne vulgaris." J Am Acad Dermatol, 2016. doi:10.1016/j.jaad.2015.12.037
  4. Zasada M, Budzisz E. "Retinoids: active molecules influencing skin structure formation in cosmetic and dermatological treatments." Postepy Dermatol Alergol, 2019. doi:10.5114/ada.2019.87443

Limitations

This page provides a general overview of Retinol in dermatology. It does not cover every possible use, formulation, or interaction. Individual responses to compounds vary — what works for one person may not work for another. Always consult a qualified dermatologist before starting or changing any treatment.