Collection: Obagi Retinols

Retinol is an over-the-counter form of vitamin A that must be converted twice in the skin before it becomes active (retinol → retinaldehyde → retinoic acid). Advanced-Protocol Retinoid is prescription-only retinoic acid — the active end-product — so it works immediately and at much greater potency. Retinol is gentler and more accessible but delivers slower, less dramatic results. Advanced-Protocol Retinoid is significantly more effective for anti-ageing, pigmentation, and acne, but requires a prescription and careful introduction. Most patients benefit from starting with retinol and progressing to Advanced-Protocol Retinoid over time.

Always start at 0.5%. Even if you feel your skin is resilient, retinoids cause a specific adjustment response (retinisation) that is independent of how tough your skin feels. Starting at 0.5% allows your skin to build tolerance gradually, reducing the risk of excessive peeling, redness, and sensitivity. Once you have used the 0.5% nightly for 8–12 weeks with good tolerance, you can consider stepping up to 1.0% — though at that point, I would often recommend progressing to Crystal Retinal or Advanced-Protocol Retinoid instead, as they offer superior results to a higher-percentage OTC retinol.

Yes, but with caution. The periorbital skin is significantly thinner than the rest of the face, which means retinol penetrates more deeply and can cause more irritation. If you want to use retinol around the eyes, apply a tiny amount (less than a grain of rice for both eyes) and buffer it by applying eye cream first. Alternatively, consider a dedicated eye product like ELASTIderm Eye Treatment Complex, which targets the eye area without the irritation risk associated with retinoids on thin periorbital skin.

Expect initial texture improvements (smoother, more refined skin) from around 4–6 weeks of consistent use. Improvements in fine lines and pigmentation typically require 8–12 weeks minimum. For meaningful anti-ageing results (deeper wrinkle reduction, significant firmness improvement), you will likely need 3–6 months — and honestly, this is where the limitations of OTC retinol become apparent. Prescription Advanced-Protocol Retinoid and Crystal Retinal deliver these deeper results more reliably and in a shorter timeframe.

In most cases, yes — eventually. OTC retinol is an excellent starting point for building vitamin A tolerance, but it has a ceiling in terms of results. Medik8 Crystal Retinal uses retinaldehyde, which is one conversion step closer to the active form (retinoic acid) than retinol, making it significantly more effective while remaining available without prescription. Prescription Advanced-Protocol Retinoid is the most potent option and is the gold standard for anti-ageing and pigmentation in clinical dermatology. I recommend booking a consultation so we can assess your skin and advise on the right time and product to progress to.