Contains 15% Vitamin C. Tone and firm sagging skin and reduce the visible signs of aging. Cellex C has been designed by dermatologists to help rid the face and neck of fine lines and wrinkles. A vitamin C concentration, high potency serum, it causes skin to gradually appear firmer and smoother, with improved color, tone, and texture. Cellex-C High Potency Serum is a unique, oil-free, patented vitamin C formulation. Please note: SkinStore.com unequivocally guarantees that Cellex C is not expired, will not expire shortly after purchase, and is the genuine Cellex produced by Caleel Hayden.