Vitamin C
Ascorbic Acid
Last reviewed: June 2026 · Medically reviewed by a licensed pharmacist
What it does
Vitamin C is the nutrient your body leans on to build collagen, the scaffolding that keeps skin firm, wounds healing, and blood vessels strong. It's also one of your main antioxidants, mopping up the daily wear and tear that stress, pollution, and sunlight create. Your body can't make it or store much, so a steady daily supply matters.
The science
Vitamin C supports collagen synthesis, immune defence, and antioxidant protection. Essential for skin, wound healing, and iron absorption.
Most relevant for
Anyone focused on skin, immunity, or recovery, and smokers (who need more).
Key references
General wellness information, not medical advice. Consult your healthcare provider before starting any supplement. Build your personalized stack →