كيفية الاستخدامApply Serum To Clean Skin Every Other Day And Work Your Way Up To Daily Use. You'Ll Begin To See Results Within 4 Weeks. Be Sure To Wear Sunscreen During The Day On Areas Where You'Ve Used This Serum.After Using This Product Continuously For 60 Days You'Ll Need To Give Your Skin A Break And Stop Using The Serum For 30 Days.