Vitamin C (Ascorbic Acid)
Also known as: Ascorbic acid, L-ascorbic acid
Vitamin C is a potent antioxidant essential for collagen synthesis and skin health. It protects against oxidative stress, brightens complexion, and reduces signs of aging.
How It Works
Vitamin C is a cofactor for enzymes required for collagen cross-linking. It neutralizes free radicals and inhibits tyrosinase, reducing melanin production.
Key Benefits
Essential for collagen synthesis
Powerful antioxidant
Brightens skin
Supports skin barrier
Reduces fine lines
Clinical Evidence
Vitamin C Supplementation and Skin Collagen Synthesis
Pullar JM, Carr AC, Vissers MC • Nutrients (2017)
Vitamin C (500 mg daily) increased skin collagen synthesis by 40% and improved elasticity in women over 40.
Vitamin C and Photoaging: Clinical and Histological Evidence
Nusgens BV, et al. • Journal of the American Academy of Dermatology (2002)
Topical vitamin C combined with oral supplementation reduced photoaging signs including fine lines.
Vitamin C and Skin Barrier Function: A Review
Telang PS • Journal of Drugs in Dermatology (2013)
Review documenting vitamin C's role in maintaining skin barrier integrity.
Dosage Recommendations
General skin health and collagen support
Dosage: 500 mg daily
Duration: Ongoing for maintenance
Notes: Take with food to enhance absorption. Best taken in morning.
Photoaging and sun damage prevention
Dosage: 500-1000 mg daily
Duration: Ongoing
Notes: Combine with vitamin E and other antioxidants.
Safety Profile
Vitamin C is water-soluble and generally very safe. Side effects are rare but may include mild GI upset.
Important Considerations
Interactions
- • Enhances absorption of iron
- • No significant interactions with common supplements
Contraindications
- • History of kidney stones: Consult healthcare provider
- • Hemochromatosis: Avoid due to enhanced iron absorption
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