The Celimax Vita A Retinal Shot Tightening Booster is a potent, targeted anti-aging treatment featuring 0.1% retinal and a 3% Matrixyl peptide complex to combat wrinkles, fine lines, and enlarged pores. Utilizing A-Shot™ microparticle technology for enhanced ingredient absorption, this booster is best used at night on specific areas of concern. While it can cause temporary tingling or a yellow tint, it offers significant firming and smoothing benefits with consistent use, but beginners should introduce it gradually and always use sunscreen the following day.