Cosmedix X- Cell + is a multitasking serum that brightens as it gently exfoliates to reveal a smoother, more even-toned appearance. X-Cell+ is a multitasking Brightening Serum Featuring LG-Retinex (.04% Retinol) that gently exfoliates and helps brighten the appearance of skin to help reveal a smoother, more even, healthier-looking complexion. Ideal prep to any facial laser treatment, surgical procedure or peel.