Specimen No. 0051
ClearedDerivedantioxidant
Vitamin C (Ascorbic Acid)
ascorbic acid · l-ascorbic acid · sodium ascorbyl phosphate
Potent antioxidant that brightens skin, stimulates collagen synthesis, and neutralizes free radical damage. Well-established and one of the most researched skincare ingredients.
high confidence
Researched April 18, 2026Specimen 0051Vitamin C (Ascorbic Acid)
Concerns
- Oxidizes quickly — formulas must be in opaque packaging
- Can sting on application, especially above 15%
- Not all derivatives are equally effective — L-ascorbic acid is most potent but least stable
Documented benefits
✓ naturally-sourced✓ plant-derived
Commonly found in
Vitamin C serumBrightening moisturizerEye creamSPF formulas
Sources & references
Last researched: April 18, 2026
Research disclaimer: This rating is based on available peer-reviewed research and regulatory assessments at the time of publication. It is not medical advice. Consult a qualified professional for personal health or skin concerns.
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