BIOME BALANCING ACNE SERUM. Benefits: Clinically proven to help clear active breakouts starting in just 3 days. Biome-Sensing Tech encourages a healthier, more balanced microbiome that's naturally more resistant to future breakouts. Clears all types of acne, including whiteheads, blackheads, and hormonal breakouts. Non-comedogenic, non-drying, non-irritating, layers well under makeup, no pilling or flaking, gentle enough for daily use. Key Ingredients: Mandelic Acid: an alpha-hydroxy acid (AHA) used to smooth and even the complexion. Biome-Sensing Tech: encourages a healthier, more balanced microbiome that's naturally more resistant to future breakouts. Medicated Salicylic Acid: clears and prevents acne, and penetrates deep to decongest clogged pores. Glutamic Acid: "feeds" the skin's microbiome so it produces GABA, a protective amino acid for healthier-looking, smoother skin. Research Results: Clearer skin starts in just 3 days*. Clinically proven to reduce active breakouts, and improve skin health and clarity*. 92% agree: no unwanted side effects* including peeling, flaking, redness, and irritation. *Consumer testing on 26 subjects in a 4-week study. *Expert grading of photos on 26 subjects in a 4-week study.