ROC Retinol Correction Deep Wrinkle Serum, ROC ?« brand. Clinically proven to visibly reduce expression lines and deep wrinkles. Stimulates your skins renewal process. (Sunburn alert: This product contains Alpha Hycroxy Acid that may increase your skins sensitivity to the sun and the possibility of sunburn. Use a sunscreen, wear protective clothing and limit sun exposure while using and for a week afterwards). 1 fl oz, 30 ml