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Retinol is used in cosmetic skincare for the appearance of fine lines, uneven tone and rough texture. Gluconolactone provides an exfoliating component alongside moisture-attracting properties. Consider both ingredients when deciding how the product fits into your existing routine.
| Brand | Obagi Medical |
|---|---|
| Product | Retinol + PHA Refining Night Cream |
| Retinol concentration | 0.3%, slow-release formulation |
| Exfoliating ingredient | Gluconolactone, a polyhydroxy acid (PHA) |
| Routine | Evening skincare |
Retinol is a vitamin A ingredient, distinct from retinaldehyde and prescription tretinoin. Percentages of these different ingredients are not interchangeable. Slow-release delivery describes the formulation; it does not mean that irritation is impossible.
PHA stands for polyhydroxy acid. In this formulation, gluconolactone contributes surface exfoliation and hydration. The cream should therefore be counted as an exfoliating product when reviewing the rest of your routine.
Adding separate acid toners, peel pads or scrubs may be unnecessary. Introducing several exfoliating products together can also make it difficult to identify the cause of a reaction.
This cream contains 0.3% retinol together with gluconolactone. Obagi Retinol 1.0 contains 1% retinol and is a different formulation. Concentration alone does not establish which product will suit your skin.
Skin By Science requires a consultation before supplying Obagi retinol above 0.3%. This particular concentration-based requirement does not apply to Retinol + PHA at 0.3%. Individual skincare advice remains available where needed.
If your skin becomes persistently dry, sore or red, pause and reassess. Do not increase frequency while irritation is present.
A moisturiser you already tolerate can remain part of your routine. If you are comparing formulations, Obagi Hydrate Facial Moisturiser is a lightweight cream option.
Our retinol safety and introduction guide explains the vitamin A family, common adverse effects and considerations when combining skincare products.
Explore the Obagi Medical skincare collection for other formulations and their individual product information.
For external use only. Avoid eye contact and application to broken or irritated skin. Keep out of reach of children. Follow the storage instructions and period-after-opening information on your packaging.