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Skincare · reviewed

SkinCeuticals C E Ferulic with 15% L-Ascorbic Acid
vs Timeless Skin Care 20% Vitamin C + E Ferulic Acid Serum

The buying question

How do the listed key actives, disclosed percentages and fragrance listing differ?

Important differences

Same three headline ingredients, but different disclosed vitamin C strengths (15% vs 20%), and the alternative does not disclose its vitamin E or ferulic acid levels.

Equivalent performance is not established.

How we reached this verdict ↗

Original

Photo unavailable

SkinCeuticals C E Ferulic with 15% L-Ascorbic Acid (current formula with carnosine and endophytol) — 30 mL

$185.00

$616.67 / 100 mL

Checked

Alternative

Photo unavailable

Timeless Skin Care 20% Vitamin C + E Ferulic Acid Serum — 1 fl oz

$25.99

$87.88 / 100 mL

Checked

Same, different, unknown.

“Same” means a recorded feature matches, not equivalent performance.

Listed key actives and disclosed percentages

Different
Original
L-ascorbic acid: 15%; Alpha tocopherol (vitamin E): 1%; Ferulic acid: 0.5%; Carnosine: 0.3%; Endophytol: 1%
Brand-stated
Alternative
L-ascorbic acid: 20%; Alpha tocopherol (vitamin E): percentage undisclosed; Ferulic acid: percentage undisclosed
Brand-stated

Both list L-ascorbic acid, vitamin E and ferulic acid. The disclosed vitamin C strength differs: 15% in the original, 20% in the alternative. The alternative does not disclose its vitamin E or ferulic acid percentages, and lists no carnosine or endophytol. A higher percentage is not a judgment of better or worse.

Sources for Listed key actives and disclosed percentages
Original
SkinCeuticals US product page
Checked
Alternative
Timeless Skin Care product page
Checked

Fragrance listed

Same
Original
No
Brand-stated
Alternative
No
Brand-stated

Neither ingredient list includes fragrance or parfum, and both brands describe the product as fragrance-free.

Sources for Fragrance listed
Alternative
Timeless Skin Care product page
Checked

What we couldn’t check

Retailer options

We may earn a commission from qualifying purchases. It never changes a verdict.

Shipping and tax excluded. Confirm totals at the retailer.

Lowest unit price first per version; ties alphabetical, missing prices last. Direct retailer links; no affiliate tracking added.

Original · SkinCeuticals C E Ferulic with 15% L-Ascorbic Acid (current formula with carnosine and endophytol) — 30 mL

Alternative · Timeless Skin Care 20% Vitamin C + E Ferulic Acid Serum — 1 fl oz

Scope & corrections

Scope version 1 · Listed key actives and disclosed percentages; Fragrance listed

This comparison uses its category’s standard scope. No scope changes are recorded.

No corrections have been recorded.

About corrections ↗