Clarifying Peptide, Salicylic + Mandelic Acid, Tea Tree Oil. 2 Peptides including a Clearing Peptide and Preservative Peptide improve skin clarity. Tea tree oil is shown to provide broad spectrum antimicrobial and especially active on the kind of bacteria involved in the development of acne, anti-inflammatory and topical anesthetic. After 2 weeks of treatment, it produced a 30% reduction of pimples and reduced sebum up to 30% after 4 weeks. Mandelic acid, with salicylic led to a significant improvement in acne reduction and more effective than glycolic alone.