The SkinCeuticals Cell Cycle Catalyst serum is designed to target the visible signs of ageing, such as fine lines, unwanted pigmentation and dead skin cells. Powered by a 7.7% multi-acid complex, the formula is infused with a blend of AHAs and BHAs to improve the appearance of discolouration while exfoliating the skin's surface to maintain optimal hydration levels. 1% taurine lends visible brightening effects to enhance skin's radiance. Proven Results: After 1 Week: -18% appearance of fine lines -11% appearance of visible pores +12% appearance of skin radiance +10% appearance of skin clarity After 8 Weeks: -21% fine lines -16% discoloration -13% visible pores +15% radiance +16% visible improvement of blemish marks Protocol: An 8-week, single-center clinical trial clinical study was conducted on 78 females with Fitzpatrick type l-VI, ages 27-68, and mild to moderate wrinkles, fine lines, rough skin texture, uneven skin tone, dull complexion. Catalyst was applied once daily as directed. Efficacy and tolerance evaluations were conducted at baseline, post-application, week 1, week 4, and week 8.