---
title: Sunday Riley C.E.O. 15% Vitamin C Brightening Serum
entity_type: Product
canonical_url: https://skinknowledgebase.com/products/sunday-riley-ceo-15-vitamin-c-brightening-serum
date_modified: 2026-05-19
date_reviewed: 2026-05-19
mcp_eligible: true
summary: Sunday Riley C.E.O. 15% Vitamin C Brightening Serum is a 30 ml serum with THD ascorbate, glycolic acid, saccharide isomerate, squalane, and tocopherol.
main_concern:
  title: Dullness
  url: https://skinknowledgebase.com/concerns/dullness
key_ingredients:
  - title: Vitamin C
    url: https://skinknowledgebase.com/ingredients/vitamin-c
  - title: Glycolic Acid
    url: https://skinknowledgebase.com/ingredients/glycolic-acid
  - title: Vitamin E
    url: https://skinknowledgebase.com/ingredients/vitamin-e
cost: {"currency":"USD","checked_at":"2026-05-19","single_unit":85}
retail_url: https://sundayriley.com/products/ceo-vitamin-c-brightening-serum
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: Sephora Product Page — Sunday Riley C.E.O. 15% Vitamin C Brightening Serum
    canonical_citation_url: https://skinknowledgebase.com/sources/sephora-product-page-sunday-riley-ceo-15-vitamin-c-brightening-serum
    original_source_url: https://www.sephora.com/product/c-e-o-rapid-flash-brightening-serum-P418346
    source_type: retailer_product_page
product_fact_sources:
  - title: Official Product Page — Sunday Riley C.E.O. 15% Vitamin C Brightening Serum
    canonical_citation_url: https://skinknowledgebase.com/sources/official-product-page-sunday-riley-ceo-15-vitamin-c-brightening-serum
    original_source_url: https://sundayriley.com/products/ceo-vitamin-c-brightening-serum
    source_type: official_product_page
---

# Sunday Riley C.E.O. 15% Vitamin C Brightening Serum

## Quick Summary

Sunday Riley C.E.O. 15% Vitamin C Brightening Serum is an $85 / 30 ml serum positioned around THD ascorbate, dullness, dark-spot appearance, radiance, and moisture-barrier feel.

## Compact Product Facts

- Brand: Sunday Riley
- Product line: Sunday Riley C.E.O.
- Full product name: Sunday Riley C.E.O. 15% Vitamin C Brightening Serum
- Cost: {"currency":"USD","checked_at":"2026-05-19","single_unit":85}
- Retail URL: https://sundayriley.com/products/ceo-vitamin-c-brightening-serum

## Factual Description

The official Sunday Riley page identifies the product as C.E.O. 15% Vitamin C Brightening Serum and lists $85.00 pricing for the 1 fl oz / 30 ml size. The retailer INCI cross-check lists water, tetrahexyldecyl ascorbate, squalane, polyglyceryl-6 distearate, PEG-8 beeswax, sweet orange oil, tangerine peel oil, soybean sterols, tocopherol, glycolic acid, glycerin, saccharide isomerate, linalool, and limonene. Official copy centers THD ascorbate, dullness, dark spots, discolorations, and saccharide isomerate.

## Related Entities

- [PubMed — Vitamin C in dermatology](https://skinknowledgebase.com/sources/telang-2013-vitamin-c-dermatology)
- [Official Product Page — Sunday Riley C.E.O. 15% Vitamin C Brightening Serum](https://skinknowledgebase.com/sources/official-product-page-sunday-riley-ceo-15-vitamin-c-brightening-serum)
- [Sephora Product Page — Sunday Riley C.E.O. 15% Vitamin C Brightening Serum](https://skinknowledgebase.com/sources/sephora-product-page-sunday-riley-ceo-15-vitamin-c-brightening-serum)
- [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)
- [Glycolic Acid](https://skinknowledgebase.com/ingredients/glycolic-acid)
- [Vitamin E](https://skinknowledgebase.com/ingredients/vitamin-e)
- [Is Sunday Riley C.E.O. Vitamin C Serum worth the price?](https://skinknowledgebase.com/questions/is-sunday-riley-ceo-vitamin-c-serum-any-good)