Ácido L-ascórbico (vitamina C)
INCI: Ascorbic Acid
Antioxidante hidrosoluble que inhibe la tirosinasa y estimula la síntesis de colágeno. Inestable frente a la oxidación: requiere un almacenamiento cuidadoso.
Evidence by route
Topical application
BLimited evidence. One RCT or several controlled studies with limitations.
Clinical trials confirm efficacy for melasma, photoaging, and photoprotection. Synergy with vitamin E and ferulic acid enhances photoprotective properties. Evidence base is limited by difficulties in standardizing formulation stability.
- Pullar JM et al. Nutrients. 2017;9(8):866.
- Murray JC et al. J Am Acad Dermatol. 2008;58(3):418-424.
Working concentrations
10–20% (pH óptimo 2,5–3,5)
Tolerability and safety
Irritation potential
MediumAllergen risk
LowPregnancy
SafeFor sensitive skin
Las concentraciones superiores al 15% pueden causar escozor y enrojecimiento en piel sensible. Se recomienda empezar por el 10%.
Skin types
Suitable for
Use with caution
Combinations with other ingredients
Works well with
Tocopherol (Vitamin E)Токоферол (витамин E)
Classic pair: vitamin E stabilizes ascorbic acid and enhances photoprotection. Lin 2003 showed 4-fold UVB protection boost when combined.
Ferulic AcidФеруловая кислота
Ferulic acid stabilizes vitamin C and doubles the formula's photoprotective properties. They work as a single antioxidant network.
Glycolic AcidГликолевая кислота
Applying vitamin C over AHA boosts bioavailability of both – low pH helps ascorbic acid stability. Best done in the morning.
NiacinamideНиацинамид
The old incompatibility myth is debunked. In modern formulas these ingredients work together, enhancing brightening and antioxidant effects.
Does not combine with
Copper Peptides (GHK-Cu)Медные пептиды (GHK-Cu)
Vitamin C reduces copper in GHK-Cu, breaking the peptide. Use at different times: C in morning, copper peptides in evening.
Benzoyl PeroxideБензоилпероксид
BPO oxidizes ascorbic acid, inactivating it. Use at different times of day.
RetinolРетинол
Different optimal pH: retinoids need neutral, vitamin C needs acidic. Use at different times: C in morning, retinol at night.
Frequently asked questions
¿Es seguro Ácido L-ascórbico (vitamina C) durante el embarazo?
Ácido L-ascórbico (vitamina C) se considera seguro durante el embarazo en concentraciones cosméticas habituales. La absorción sistémica a través de la piel es mínima.
¿Para qué tipos de piel sirve Ácido L-ascórbico (vitamina C)?
Ácido L-ascórbico (vitamina C) es adecuado para: normal, mixta, grasa. Usar con precaución en: sensible, seca.
¿Ácido L-ascórbico (vitamina C) irrita la piel?
Ácido L-ascórbico (vitamina C) tiene un potencial irritante moderado. La piel sensible puede mostrar una reacción transitoria que suele ceder con la adaptación.