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Vitamin C (Topical)

Vitamin C Serum, L-Ascorbic Acid Serum, Ascorbic Acid Serum, L-Ascorbic Acid, Topical Ascorbate, Ascorbic Acid Topical

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Meta Information

ID:vitamin-c-topical
Name:Vitamin C
Schema Version:1.5

Alternate Names

  • Vitamin C Serum
  • L-Ascorbic Acid Serum
  • Ascorbic Acid Serum
  • L-Ascorbic Acid
  • Topical Ascorbate
  • Ascorbic Acid Topical

Active Compound

L-ascorbic acid

Intervention Type

therapeutic_agent

Delivery

Route:
topical_skin
Scope:
  • local

Is Skin Health

True

Regulatory Status

  • us:cosmetic
  • eu:cosmetic
  • us:otc_drug

Indication

Focus:
  • disease_treatment
  • healthspan
Description:
Adjunctive therapy for specific cancers and sepsis, leveraging pro-oxidant effects at pharmacological concentrations. | Used to reduce visible signs of skin aging (photoaging), promote collagen synthesis, and provide antioxidant protection against environmental damage.

Typical Protocol

  • Apply a 10-20% L-ascorbic acid serum to the face once daily, typically in the morning before sunscreen.

Expected Cost Mean

Low Cost:
20
High Cost:
150
Cost Type:
monthly
Description:
Cost for a 30ml serum; not covered by insurance for cosmetic use.

Summary

Historically, high-dose intravenous Vitamin C has been investigated for disease treatment, where it acts as a pro-oxidant to help damage cancer cells or manage severe inflammation. This high-concentration medical application is distinct from its emerging role in healthspan optimization. In this newer context, topical Vitamin C acts as a powerful antioxidant to protect skin from environmental damage while also playing a crucial role in building collagen to improve skin structure and reduce wrinkles.

Purpose

Antioxidant protection and collagen synthesis for skin healthspan.

Card Summary

A topical antioxidant serum that protects skin from environmental damage and boosts collagen production.

Drug Class

null

Drugs In Class

Empty Array

Impact

Score:
4.5
Justification:
Effective for a specific healthspan goal (skin photoaging) but has no systemic impact.

Evidence

Grade:
A
Score:
8.5
Justification:
Multiple high-quality human RCTs confirm efficacy for reducing photoaging and boosting collagen.

Safety

Score:
2.5
Justification:
Generally very safe but can cause skin irritation, redness, or stinging.

Flags

  • Unstable formulations can oxidize, becoming ineffective or even pro-oxidant.
  • Can cause stinging or irritation, especially at concentrations above 20% or on sensitive skin.
  • Should be stored in a dark, cool place to prevent degradation.
  • Most effective when combined with Vitamin E and Ferulic Acid for stability.

Verdict

A well-evidenced, safe intervention for improving skin healthspan and appearance.

Qualifier

route: topical_skin, scope: local, focused on healthspan (facial serum for collagen/photoaging)

Created

2026-04-29T20:45:35.551763Z

Ai Model

Gemini 2.5 Pro (High)