The 30 Days Miracle AC SOS Kit from Some By Mi is a highly popular skincare set designed specifically for acne-prone skin. This kit is part of the 30 Days Miracle line, which is known for its focus on using gentle yet effective ingredients like Tea Tree Oil, Salicylic Acid, and Centella Asiatica (Cica) to treat acne and other skin concerns over a consistent 30-day period.