KrX's O2 Booster Ampoule is a post-carboxy treatment booster. Carboxy therapy works by triggering a controlled CO₂ response — accelerating circulation, stimulating cellular activity, and priming the skin for absorption. The O2 Booster Ampoule is designed to meet the skin at that exact moment. Applied immediately post-treatment, this oxygenating ampoule activates on contact, releasing micro-bubbles that intensify oxygen delivery to the tissue. The result is a direct amplification of what carboxy already initiated — deeper absorption, faster recovery, and a visible lift in radiance. The formula has a layered hydration system built on Hyaluronic Acid, Hydrolyzed Hyaluronic Acid, and Glycerin. Panthenol and Allantoin support barrier recovery. Other ingredients to note: Astaxanthin and Beta-Glucan contribute antioxidant protection and immune-supportive activity as the skin begins its repair cycle. Botanical ferments — including Saccharomyces/Panax Ginseng Flower Ferment and Malus Domestica Fruit Extract — reinforce cellular renewal.