| Cellex-C's Cellex-C Advanced-C Skin Hydration Complex Advanced-C Skin Hydration Complex is an oil-free, crystal clear gel which instantly gives your skin a silky smooth texture. The seemingly miraculous active ingredient is pure hyaluronic acid - one of the most effective moisturizing agents ever discovered by medical science. Skin Hydration Complex utilizes natures own incredible moisturizer to improve the smoothness, suppleness and texture of your skin. . |  |