Vitamin C Brightening Serum · updated 2026-06-15

The best Sunday Riley C.E.O. Vitamin C Brightening Serum dupes

We compiled and scored the affordable, currently-available dupes for Sunday Riley C.E.O. Vitamin C Brightening Serum — ranked by how close they really are, with live prices and direct links.

See the ranked list → How we score

Ranked by consensus

Every Sunday Riley C.E.O. Vitamin C Brightening Serum dupe, scored & ranked

#1 70/100 The Ordinary Ascorbyl Tetraisopalmitate Solution 10% in Vitamin F

Dupe of Sunday Riley C.E.O. Vitamin C Brightening Serum

The Ordinary — Ascorbyl Tetraisopalmitate Solution 10% in Vitamin F

● Good enough

This uses the same oil-soluble THD/tetraisopalmitate-type vitamin C as C.E.O. (at 10%) in a gentle oil base, making it the closest ingredient-form match, though it's lower-concentration and lacks C.E.O.'s additional actives.

“Closest vitamin C form match”

Known dupe widely cited as a Sunday Riley C.E.O. Vitamin C Brightening Serum dupe

$20.50

Check price at Amazon → Save $6074% less than the Sunday Riley C.E.O. Vitamin C Brightening Serum Amazon price · checked 2026-06-15 15:16:56 UTC

#2 66/100 Geek & Gorgeous C-Glow 15% Vitamin C Serum

Dupe of Sunday Riley C.E.O. Vitamin C Brightening Serum

Geek & Gorgeous — C-Glow 15% Vitamin C Serum

● Worth a look

An affordable serum built on 15% THD ascorbate, matching C.E.O.'s vitamin C form and percentage closely, though brand availability and supporting ingredients differ.

“Same form and strength”

Known dupe widely cited as a Sunday Riley C.E.O. Vitamin C Brightening Serum dupe

$14.90

Check price at Amazon → Save $6581% less than the Sunday Riley C.E.O. Vitamin C Brightening Serum Amazon price · checked 2026-06-15 15:16:56 UTC

#3 63/100 Maelove Glow Maker Vitamin C Serum

Dupe of Sunday Riley C.E.O. Vitamin C Brightening Serum

Maelove — Glow Maker Vitamin C Serum

● Worth a look

A cult-favorite affordable serum combining 15% L-ascorbic acid with vitamin E, ferulic, and hyaluronic acid for brightening, overlapping in goal but differing in vitamin C form, pH, and feel versus the oil-soluble C.E.O.

“Popular low-cost C+E+ferulic”

Known dupe widely cited as a Sunday Riley C.E.O. Vitamin C Brightening Serum dupe

$39.90

Check price at Amazon → Save $4050% less than the Sunday Riley C.E.O. Vitamin C Brightening Serum Amazon price · checked 2026-06-15 15:16:56 UTC

#4 62/100 Timeless Vitamin C + E Ferulic Acid Serum

Dupe of Sunday Riley C.E.O. Vitamin C Brightening Serum

Timeless — Vitamin C + E Ferulic Acid Serum

● Worth a look

A widely recommended budget antioxidant serum using 20% L-ascorbic acid plus vitamin E and ferulic acid, so it shares the brightening/antioxidant positioning but uses a different, water-based and potentially more irritating form of vitamin C than C.E.O.'s THD ascorbate.

“Cheap antioxidant workhorse”

Known dupe widely cited as a Sunday Riley C.E.O. Vitamin C Brightening Serum dupe

$35.95

Check price at Amazon → Save $4455% less than the Sunday Riley C.E.O. Vitamin C Brightening Serum Amazon price · checked 2026-06-15 15:16:56 UTC

#5 60/100 Naturium Vitamin C Complex Serum

Dupe of Sunday Riley C.E.O. Vitamin C Brightening Serum

Naturium — Vitamin C Complex Serum

● Worth a look

A reasonably priced serum blending multiple vitamin C derivatives (including THD ascorbate) for brightening, overlapping in form and positioning but differing in overall concentration and supporting actives from C.E.O.

“Multi-form C, gentle option”

Known dupe widely cited as a Sunday Riley C.E.O. Vitamin C Brightening Serum dupe

$17.89

Check price at Amazon → Save $6278% less than the Sunday Riley C.E.O. Vitamin C Brightening Serum Amazon price · checked 2026-06-15 15:16:56 UTC

#6 52/100 La Roche-Posay Pure Vitamin C10 Serum

Dupe of Sunday Riley C.E.O. Vitamin C Brightening Serum

La Roche-Posay — Pure Vitamin C10 Serum

● Worth a look

A drugstore-accessible 10% L-ascorbic acid serum aimed at brightening and texture, sharing the goal but using a different vitamin C form and lower strength than C.E.O.

“Pharmacy-brand brightening serum”

Known dupe widely cited as a Sunday Riley C.E.O. Vitamin C Brightening Serum dupe

$44.99

Check price at Amazon → Save $3544% less than the Sunday Riley C.E.O. Vitamin C Brightening Serum Amazon price · checked 2026-06-15 15:16:56 UTC

#7 50/100 The Ordinary Vitamin C Suspension 23% + HA Spheres 2%

Dupe of Sunday Riley C.E.O. Vitamin C Brightening Serum

The Ordinary — Vitamin C Suspension 23% + HA Spheres 2%

● Worth a look

An ultra-cheap high-strength L-ascorbic acid option in a silicone base that targets the same brightening goal, but its gritty texture and very different vitamin C form make it a rougher, less elegant stand-in than C.E.O.

“Budget high-strength, gritty feel”

Known dupe widely cited as a Sunday Riley C.E.O. Vitamin C Brightening Serum dupe

$16.20

Check price at Amazon → Save $6480% less than the Sunday Riley C.E.O. Vitamin C Brightening Serum Amazon price · checked 2026-06-15 15:16:56 UTC

How these scores are built: each alternative is rated 0–100 by blending brand “inspired-by” mappings, community dupe spreadsheets & forum votes, and independent reviewer/video tests — weighted by independence. We have not personally tested these; every claim links to its source. Read the full methodology →

About Sunday Riley C.E.O. Vitamin C Brightening Serum & its dupes

Sunday Riley C.E.O. Vitamin C Brightening Serum is a lightweight, gel-textured face serum built around a stabilized, oil-soluble form of vitamin C (15% tetrahexyldecyl ascorbate / THD ascorbate) rather than the more common L-ascorbic acid. It's positioned to target dullness, uneven tone, and the look of dark spots while feeling silkier and generally less irritating than water-based L-ascorbic acid serums. It also includes supporting antioxidants and a glycolic acid derivative. The dupes below are lower-cost alternatives chosen for ingredient and positioning overlap (vitamin C / brightening antioxidants); they are not claimed to deliver identical results, since the specific form of vitamin C, concentration, pH, and overall formulation differ meaningfully between products and affect performance and tolerance.

How to choose a Sunday Riley C.E.O. Vitamin C Brightening Serum dupe

First decide which form of vitamin C you want: THD ascorbate (like C.E.O.) is oil-soluble, more stable, and tends to be gentler, while L-ascorbic acid is more researched but less stable and potentially more irritating at high strengths and low pH. Match the form if you specifically liked how C.E.O. felt or performed. Consider concentration (often 10–20%), supporting ingredients (vitamin E, ferulic acid, hyaluronic acid), and texture (gel vs. water-thin vs. oil). Sensitive or dry skin generally does better with THD-based or lower-percentage L-ascorbic formulas; oily skin may prefer water-light serums. Always patch test, introduce slowly, and pair daytime use with sunscreen. Note that "dupe" here means a comparable, lower-cost option by ingredient positioning — not a guarantee of equal efficacy or tolerance, and this is general information, not medical or dermatological advice.

Sunday Riley C.E.O. Vitamin C Brightening Serum dupe FAQ

Are these dupes the same strength as C.E.O.?

Not necessarily. C.E.O. uses about 15% THD ascorbate. Some alternatives use the same form at similar or different percentages, while others use L-ascorbic acid, which behaves differently in terms of stability, pH, and potential irritation. Always check the label and start with lower frequency.

Will a cheaper vitamin C serum give the same brightening results?

There's no guarantee. Vitamin C results depend on the form, concentration, formulation stability, packaging, and your individual skin. A lower-cost serum with overlapping ingredients may perform comparably for some people and differently for others. These are positioning-based alternatives, not proven equivalents.

THD ascorbate vs. L-ascorbic acid — does it matter for a dupe?

Yes. THD ascorbate (in C.E.O.) is oil-soluble, more stable, and usually gentler, while L-ascorbic acid is the most-studied form but is less stable and can be irritating. If tolerance or texture mattered to you, prioritize a THD-based alternative; if you want the most-researched form, an L-ascorbic option may suit you.

Can I use vitamin C serum every day?

Many people do, but it depends on the product and your skin. Introduce it gradually, patch test first, and use sunscreen daily since vitamin C is typically used in the morning. If you experience stinging or redness, reduce frequency. This is general information, not medical advice.