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.

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.

SkinCeuticals · United States

C E Ferulic

Compare this product ↗

Skin prep · Antioxidant serum · Light, silky

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

Ad · affiliate links

Honest disclosure: shopping links on this page may be affiliate links. We may earn a commission at no extra cost to you. It never affects rankings or reviews.

How we make money →

Buy from

Shop at SkinCeuticals

£169 · Guide price from the brand’s official page — may have changed at checkout.

SkinCeuticals · C E Ferulic

Shop at SkinCeuticals ↗

The desk verdict

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 short version

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.

Product information reviewed 2026-09-25.

01 / The basics

What is C E Ferulic?

SkinCeuticals lists 15% pure L-ascorbic acid, 1% vitamin E (tocopherol) and 0.5% ferulic acid; the brand directs four to five drops each morning on dry skin after cleansing, followed by moisturiser and broad-spectrum sunscreen.

Best for: A morning L-ascorbic acid step under sunscreen

02 / Review

What is in C E Ferulic?

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.

03 / Review

Who is C E Ferulic best 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.

04 / Review

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.

05 / How to use it

How should you use C E Ferulic?

01Apply four to five drops each morning to dry skin after cleansing
02Cover face, neck and chest
03Follow with moisturiser and a broad-spectrum sunscreen
04Keep the bottle closed and store as the brand directs

06 / Quick facts

What should you know before choosing C E Ferulic?

—15% pure L-ascorbic acid, 1% vitamin E (tocopherol), 0.5% ferulic acid; 30ml
—£169 at LOOKFANTASTIC, Cult Beauty and Space NK (25 September 2026)
—UK ingredient list: water, dipropylene glycol, ascorbic acid, glycerin, laureth-23, phenoxyethanol, tocopherol, ferulic acid, sodium hyaluronate
—Listed as fragrance-free by Space NK
—Four to five drops each morning on dry skin, then moisturiser and broad-spectrum SPF
—A reformulated US version announced in July 2026 adds further ingredients; UK retailer ingredient lists were unchanged when checked

C E Ferulic, answered

What is C E Ferulic by SkinCeuticals?: C E Ferulic is a antioxidant serum from SkinCeuticals, formulated for a morning l-ascorbic acid step under sunscreen. SkinCeuticals lists 15% pure L-ascorbic acid, 1% vitamin E (tocopherol) and 0.5% ferulic acid; the brand directs four to five drops each morning on dry skin after cleansing, followed by moisturiser and broad-spectrum sunscreen.
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.

Also reviewed by the desk

Back to the Season Beauty Index, the New York desk, or read how the desk selects and verifies products.