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Celimax
If new to Retinal/Retinol, use every other night during the first two weeks. Apply a small amount on targeted areas. Reduce usage if irritation occurs, and use a soothing moisturizer. Retinal may cause slight skin yellowing, removable with cleansing. Avoid eye contact and thoroughly wash hands after use. Nighttime use only; apply sunscreen the following day. Excessive application at once may lead to skin irritation.