Extreme Effect 4-Terpineol 10ml, PURCELLPRODUCT INFORMATION This is a spot treatment formulated with 99. 5% high purity terpinenol, a key active compound of tea tree oil, specialized for soothing acne and controlling excess sebum. Terpinenol powerfully removes excess oil, calms inflammation, and targets breakouts effectively. It softens and soothes existing acne or blemishes, while helping to regulate sebum and prevent new ones at the early stage. Clinically tested for improving skin