The Y Theorem Concentrate, 7 X 2ml - Colorless

111SKIN's'The Y Theorem Concentrate'is a seven-day treatment program designed to help renew stressed skin. It's formulated with a blend of active ingredients that soothe sensitivity, stimulate collagen production and improve skin's elasticity for a plumper, more youthful-looking complexion. - NAC Y² helps boost the production of Glutathione, a master antioxidant that's essential for all cellular repair - Ectoin® optimizes skin recovery to reduce scaring and protect against harmful environmental aggressors