BIOME-BALANCING CLEAR & PREVENT ACNE TREATMENT SERUM New but the box got leaked on by the shampoo that was shipped with it Full size 1.0 fl oz Clear all types of breakouts—from whiteheads to hormonal—and prevent acne relapses with this breakthrough serum. Salicylic acid clears, mandelic acid smooths and evens tone, and Biome-Sensing Tech + glutamic acid empower your microbiome to generate what it needs to thrive for balanced, healthier-looking skin