Ascorbic acid (vitamin C) 23% ek bahut high concentration wala topical antioxidant hai jo free radicals ko neutralize karta hai, collagen banane mein help karta hai, aur hyperpigmentation aur uneven skin tone kam karne mein useful hai. Itni zyada concentration pe yeh thoda irritating bhi ho sakta hai, toh sensitive skin wale pehle patch test zaroor karein. AM mein use karein toh SPF saath lagana must hai.