From Manufacturer - For all skin types including sensitive skin. A lightweight, oil-free formulation. Contains a higher pH and sensitivity adapted patented Cellex-C complex - 7.5% pure L-ascorbic acid, L-tyrosine and zinc sulfate. Designed for sensitive, acne and rosacea prone skin. Helps to reduce the appearance of fine lines, wrinkles and sagging skin within 8 to 12 weeks of daily use. pH 3.1-3.5