L-Ascorbic Acid
INCI: ascorbic acid
L-ascorbic acid is the pure, biologically active form of vitamin C and one of the most powerful topical antioxidants available. It neutralises free radicals generated by UV exposure, regenerates oxidised vitamin E, and serves as an essential cofactor for prolyl and lysyl hydroxylase enzymes in collagen synthesis. At 10–20% and a pH below 3.5, it measurably brightens skin, fades hyperpigmentation, and boosts photoprotection when layered under sunscreen. Its main weakness is instability — it oxidises quickly in the presence of water, light, and air. Look for opaque, air-restricted packaging, low-pH formulations, and ideally ferulic acid and vitamin E for stabilisation.
- Effective concentration
- 10–20% (optimal: 15%)
- Suitable skin types
- Alle Hauttypen (außer sehr empfindliche)
- Addresses concerns
- Alterung, Hyperpigmentierung, Freie Radikale, Gleichmäßiger Hautton
- Also known as
- Vitamin C, L-Ascorbinsäure
Frequently asked questions
What is L-Ascorbic Acid?
L-Ascorbic Acid (INCI: ascorbic acid) is a cosmetic ingredient in the Antioxidant & collagen synthesis (Vitamin C) category. bestofme.site rates it 5/5 stars — classified as: proven active.
Is L-Ascorbic Acid good for your skin?
L-Ascorbic Acid is rated 5/5 stars at bestofme.site (classification: proven active). Considered suitable for: Alle Hauttypen (außer sehr empfindliche). Addressed concerns: Alterung, Hyperpigmentierung, Freie Radikale, Gleichmäßiger Hautton.
What concentration of L-Ascorbic Acid is effective?
10–20% (optimal: 15%)