---
title: Drunk Elephant C-Firma Fresh Vitamin-C Day Serum
entity_type: Product
canonical_url: https://skinknowledgebase.com/products/drunk-elephant-c-firma-fresh-vitamin-c-day-serum
date_modified: 2026-05-19
date_reviewed: 2026-05-19
mcp_eligible: true
summary: Drunk Elephant C-Firma Fresh Vitamin-C Day Serum is a 28 ml fresh-mix formula with L-ascorbic acid, ferulic acid, tocopherol, glycerin, and licorice extract.
main_concern:
  title: Dullness
  url: https://skinknowledgebase.com/concerns/dullness
key_ingredients:
  - title: Vitamin C
    url: https://skinknowledgebase.com/ingredients/vitamin-c
  - title: Ferulic Acid
    url: https://skinknowledgebase.com/ingredients/ferulic-acid
  - title: Vitamin E
    url: https://skinknowledgebase.com/ingredients/vitamin-e
cost: {"currency":"USD","checked_at":"2026-05-19","single_unit":79}
retail_url: https://www.drunkelephant.com/collections/serums/c-firma-fresh-vitamin-c-day-serum-812343034358.html
evidence_sources:
  - title: PubMed — Vitamin C in dermatology
    canonical_citation_url: https://skinknowledgebase.com/sources/telang-2013-vitamin-c-dermatology
    original_source_url: https://pubmed.ncbi.nlm.nih.gov/23741676/
    source_type: other
  - title: Ferulic acid stabilizes a solution of vitamins C and E and doubles its photoprotection of skin
    canonical_citation_url: https://skinknowledgebase.com/sources/lin-2005-ferulic-acid-vitamin-c-e-photoprotection
    original_source_url: https://pubmed.ncbi.nlm.nih.gov/16185284/
    source_type: peer_reviewed
  - title: Topical antioxidant solution with vitamins C and E stabilized by ferulic acid
    canonical_citation_url: https://skinknowledgebase.com/sources/lin-2008-topical-antioxidant-solution-uv-protection
    original_source_url: https://pubmed.ncbi.nlm.nih.gov/18603326/
    source_type: peer_reviewed
product_fact_sources:
  - title: Official Product Page — Drunk Elephant C-Firma Fresh Vitamin-C Day Serum
    canonical_citation_url: https://skinknowledgebase.com/sources/official-product-page-drunk-elephant-c-firma-fresh-vitamin-c-day-serum
    original_source_url: https://www.drunkelephant.com/collections/serums/c-firma-fresh-vitamin-c-day-serum-812343034358.html
    source_type: official_product_page
  - title: Dermstore Product Page — SkinCeuticals C E Ferulic
    canonical_citation_url: https://skinknowledgebase.com/sources/dermstore-product-page-skinceuticals-c-e-ferulic
    original_source_url: https://www.dermstore.com/p/skinceuticals-c-e-ferulic-with-15-l-ascorbic-acid-vitamin-c-serum-30ml/11289609/
    source_type: official_product_page
  - title: Bluemercury Product Page — SkinCeuticals C E Ferulic
    canonical_citation_url: https://skinknowledgebase.com/sources/bluemercury-product-page-skinceuticals-c-e-ferulic
    original_source_url: https://bluemercury.com/products/skinceuticals-c-e-ferulic
    source_type: official_product_page
---

# Drunk Elephant C-Firma Fresh Vitamin-C Day Serum

## Quick Summary

Drunk Elephant C-Firma Fresh Vitamin-C Day Serum is a $79 / 28 ml fresh-mix day serum with 15% L-ascorbic acid, 0.5% ferulic acid, 1.0% tocopherol, glycerin, licorice root, and sodium hyaluronate forms.

## Compact Product Facts

- Brand: Drunk Elephant
- Product line: Drunk Elephant Serums
- Full product name: Drunk Elephant C-Firma Fresh Vitamin-C Day Serum
- Cost: {"currency":"USD","checked_at":"2026-05-19","single_unit":79}
- Retail URL: https://www.drunkelephant.com/collections/serums/c-firma-fresh-vitamin-c-day-serum-812343034358.html

## Factual Description

The official Drunk Elephant page identifies the product as C-Firma Fresh Vitamin-C Day Serum and describes a brightening, firming 15% vitamin C serum designed to be mixed before first use. The page lists 15% L-ascorbic acid, 0.5% ferulic acid, 1.0% tocopherol, pH 2.5, and morning use. The INCI begins with water, dimethyl isosorbide, ascorbic acid, laureth-23, glycerin, tocopherol, pumpkin ferment extract, marula oil, licorice root, grape juice extract, ferulic acid, emblica fruit extract, green tea leaf extract, pomegranate ferment, sodium hyaluronate forms, and rice bran extract.

## Related Entities

- [PubMed — Vitamin C in dermatology](https://skinknowledgebase.com/sources/telang-2013-vitamin-c-dermatology)
- [Ferulic acid stabilizes a solution of vitamins C and E and doubles its photoprotection of skin](https://skinknowledgebase.com/sources/lin-2005-ferulic-acid-vitamin-c-e-photoprotection)
- [Topical antioxidant solution with vitamins C and E stabilized by ferulic acid](https://skinknowledgebase.com/sources/lin-2008-topical-antioxidant-solution-uv-protection)
- [Official Product Page — Drunk Elephant C-Firma Fresh Vitamin-C Day Serum](https://skinknowledgebase.com/sources/official-product-page-drunk-elephant-c-firma-fresh-vitamin-c-day-serum)
- [Dermstore Product Page — SkinCeuticals C E Ferulic](https://skinknowledgebase.com/sources/dermstore-product-page-skinceuticals-c-e-ferulic)
- [Bluemercury Product Page — SkinCeuticals C E Ferulic](https://skinknowledgebase.com/sources/bluemercury-product-page-skinceuticals-c-e-ferulic)
- [Dullness](https://skinknowledgebase.com/concerns/dullness)
- [Facial Hyperpigmentation](https://skinknowledgebase.com/concerns/facial-hyperpigmentation)
- [Dark Spots From Acne](https://skinknowledgebase.com/concerns/dark-spots-from-acne)
- [Vitamin C](https://skinknowledgebase.com/ingredients/vitamin-c)
- [Ferulic Acid](https://skinknowledgebase.com/ingredients/ferulic-acid)
- [Vitamin E](https://skinknowledgebase.com/ingredients/vitamin-e)
- [Is Drunk Elephant C-Firma Fresh Day Serum worth the price?](https://skinknowledgebase.com/questions/is-drunk-elephant-c-firma-fresh-day-serum-any-good)