PURCELL Extreme Effect 4-Terpineol 10ml | Strong effective on acne PURCELL Extreme Effect 4-Terpineol Rapid Suppression Solution is a fast-acting formula that swiftly improves acne-prone skin and relieves sudden acne troubles. With just one drop, it can address a variety of skin problems, including inflammatory acne, open/closed comedones, and more. For even faster results, use it in conjunction with the 20 billion/mL Pixcell Biom™ original solution for a more substantial synergistic effect on spot removal.