
After cleansing, apply a small amount evenly over the face or on areas of concern before applying moisturizer. For daytime use, always finish with sunscreen. For nighttime use, apply a thin layer as the serum step before moisturizer.
First 2 weeks: every other day. After 2 weeks: daily (AM or PM).
- Retinal may cause irritation depending on skin type; if new to retinoids, start with once every other day and gradually increase frequency. - Retinal increases skin sensitivity to UV; sunscreen must be applied during daytime use. - Do not use on wounded, irritated, or sensitized skin. - Avoid layering with strong actives such as Vitamin C, AHAs/BHAs, or other exfoliants in the same application step. - Discontinue use and consult a dermatologist if redness, swelling, itching, or irritation occurs. - Patch test recommended before first use.