The ISOI Acne Doctor 1st Control Tonic 130ml + Experience Kit is renowned for its effectiveness in improving acne-prone skin, with 90% of users feeling an improvement in their skin concerns and 95% noticing cleaner skin and reduced redness. Its formula includes Peony Root Extract, a key ingredient that is particularly beneficial for acne-prone skin, alongside a blend of plant-derived ingredients that prioritize skin's sensitivity and irritation reduction while enhancing moisture and vitality.