# SkinCeuticals C E Ferulic

> SkinCeuticals C E Ferulic combines 15% L-ascorbic acid, 1% vitamin E and 0.5% ferulic acid in a fragrance-free morning serum. UK retailers listed it at £169 for 30ml on 25 September 2026. A reformulated US version was announced in July 2026; UK ingredient lists had not changed when checked.

- Canonical: https://thecastindex.com/beauty/skinceuticals-c-e-ferulic
- Category: Skin prep
- Format: Antioxidant serum
- Finish: Light, silky
- Best for: A morning L-ascorbic acid step under sunscreen
- Official: https://www.skinceuticals.co.uk/en_GB/c-e-ferulic-antioxidant-serum/635494363210.html
- Reviewed: 2026-09-25
- Method: evidence-led desk review of official specifications — not an implied hands-on test

## Should you buy this?

The L-ascorbic acid benchmark: 15% vitamin C with 1% vitamin E and 0.5% ferulic acid, fragrance-free and used in the morning under sunscreen. The trade-off is price — £169 for 30ml.

Skip this if you want a budget vitamin C, prefer a derivative for stability, or react to low-pH serums.

The L-ascorbic acid benchmark: a clear, light morning layer that sits under sunscreen and base without adding shine.

## The formula

C E Ferulic combines three antioxidants at stated strengths: 15% L-ascorbic acid, the most studied form of topical vitamin C, with 1% vitamin E and 0.5% ferulic acid. The short UK ingredient list keeps the focus on those actives, with glycerin and hyaluronic acid in a light, silky serum.

L-ascorbic acid is effective but unstable: it oxidises on exposure to air and light, which can darken a serum over time. Keeping the bottle closed and following the brand’s storage guidance matters.

## Who it’s for

Someone who wants the most-researched form of vitamin C in a single, simple morning step under moisturiser and sunscreen, and is prepared to pay for it.

## What should you check before buying?

Price is the obvious trade-off at £169 for 30ml. SkinCeuticals announced a reformulated US version in July 2026 with additional ingredients; UK ingredient lists checked on 25 September 2026 still showed the established formula, so check the pack. Patch test if your skin is reactive to acidic serums.

## How to use it

1. Apply four to five drops each morning to dry skin after cleansing
2. Cover face, neck and chest
3. Follow with moisturiser and a broad-spectrum sunscreen
4. Keep the bottle closed and store as the brand directs

## Questions and answers

### What is in SkinCeuticals C E Ferulic?

15% L-ascorbic acid, 1% vitamin E (tocopherol) and 0.5% ferulic acid, in a serum with glycerin and sodium hyaluronate.

### When should I apply SkinCeuticals C E Ferulic?

SkinCeuticals directs four to five drops each morning on dry skin after cleansing, followed by moisturiser and broad-spectrum sunscreen.

### Why has my vitamin C serum changed colour?

L-ascorbic acid oxidises over time, which can darken the serum. Keep the bottle closed, store it as the brand directs and follow its guidance on colour change.

## Explore the category

https://thecastindex.com/beauty/category/skin-prep