SkinCeuticals Cell Cycle Catalyst 1oz / 30ml New. Cell Cycle Catalyst – Exfoliating Anti-Aging Serum SkinCeuticals's Cell Cycle Catalyst - Exfoliating Anti-Aging Serum paves the way to a revitalized, luminous complexion. A powerhouse blend of 7.7% multi-acid complex and 1% taurine stimulates quick cell renewal, diminishing fine lines and correcting uneven skin tone for a seamless surface. This transformative serum is essential in any anti-aging collection, refining rough textures and lightening dark spots with precision. Enriched with phytic acid, it nourishes while protecting the skin's natural defenses, contributing to a brighter visage. Perfect for amplifying the benefits of professional treatments, this fragrance, silicone, and alcohol-free formulation offers an effortlessly radiant and rejuvenated complexion.