---
title: Peter Thomas Roth Potent-C Power Serum
entity_type: Product
canonical_url: https://skinknowledgebase.com/products/peter-thomas-roth-potent-c-power-serum
date_modified: 2026-05-19
date_reviewed: 2026-05-19
mcp_eligible: true
summary: Peter Thomas Roth Potent-C Power Serum is a 30 ml serum with THD ascorbate, tocopheryl acetate, ferulic acid, squalane, sodium hyaluronate, and botanicals.
main_concern:
  title: Dullness
  url: https://skinknowledgebase.com/concerns/dullness
key_ingredients:
  - title: Vitamin C
    url: https://skinknowledgebase.com/ingredients/vitamin-c
  - title: Vitamin E
    url: https://skinknowledgebase.com/ingredients/vitamin-e
  - title: Ferulic Acid
    url: https://skinknowledgebase.com/ingredients/ferulic-acid
cost: {"currency":"USD","checked_at":"2026-05-19","single_unit":46.97}
retail_url: https://bluemercury.com/products/peter-thomas-roth-potent-c-power-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: 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
  - title: Blue Mercury Product Page — Peter Thomas Roth Potent-C Power Serum
    canonical_citation_url: https://skinknowledgebase.com/sources/blue-mercury-product-page-peter-thomas-roth-potent-c-power-serum
    original_source_url: https://bluemercury.com/products/peter-thomas-roth-potent-c-power-serum
    source_type: retailer_product_page
product_fact_sources:
  - 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
---

# Peter Thomas Roth Potent-C Power Serum

## Quick Summary

Peter Thomas Roth Potent-C Power Serum is a concentration-forward vitamin C serum with 20% THD ascorbate, 3% vitamin E, 2% ferulic acid, squalane, sodium hyaluronate, and botanicals.

## Compact Product Facts

- Brand: Peter Thomas Roth
- Product line: Peter Thomas Roth Potent-C
- Full product name: Peter Thomas Roth Potent-C Power Serum
- Cost: {"currency":"USD","checked_at":"2026-05-19","single_unit":46.97}
- Retail URL: https://bluemercury.com/products/peter-thomas-roth-potent-c-power-serum

## Factual Description

The Blue Mercury product page identifies Potent-C Power Serum by Peter Thomas Roth and describes a brightening treatment featuring 20% THD ascorbate. Its ingredient modules list THD ascorbate 20%, vitamin E 3%, and ferulic acid 2%. The INCI starts with water, tetrahexyldecyl ascorbate, butylene glycol, C9-12 alkane, caprylyl methicone, tocopheryl acetate, C10-18 triglycerides, ferulic acid, squalane, propanediol, sodium hyaluronate, ginger root extract, turmeric root extract, ginseng root extract, jojoba esters, glycerin, and preservative support.

## 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)
- [Blue Mercury Product Page — Peter Thomas Roth Potent-C Power Serum](https://skinknowledgebase.com/sources/blue-mercury-product-page-peter-thomas-roth-potent-c-power-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)
- [Vitamin E](https://skinknowledgebase.com/ingredients/vitamin-e)
- [Ferulic Acid](https://skinknowledgebase.com/ingredients/ferulic-acid)
- [Is Peter Thomas Roth Potent-C Power Serum worth the price?](https://skinknowledgebase.com/questions/is-peter-thomas-roth-potent-c-power-serum-any-good)