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Formulation Audit · SkinCeuticals · L-Ascorbic Acid Antioxidant Serum (15% Vitamin C) · $182 USD

C E Ferulic (vs. Timeless 20% Vitamin C + E Ferulic Dupe)

Holy Grail INCI Ledger ↗ Acquire ($182) ↗ Affiliate link — labelled partner placement
Skin Suitability
Photoaged, dull or pigment-prone skin (AM, under SPF)
Chemical Equivalent
Timeless Skin Care 20% Vitamin C + E Ferulic Acid Serum (~$30 — 20% L-ascorbic acid, 1% vitamin E, 1% ferulic acid)
Molecular Incompatibilities
Retinoids (same routine) · Benzoyl Peroxide · AHA / BHA (same routine) · Silica Spicules (Reedle Shot)
Creator Hype
86/100
Buyer Efficacy
88/100

Section V · Regimen Clash Check

Will C E Ferulic (vs. Timeless 20% Vitamin C + E Ferulic Dupe) Clash With Your Routine?

Add the rest of your routine after SkinCeuticals C E Ferulic (vs. Timeless 20% Vitamin C + E Ferulic Dupe) and run the check — it cross-examines retinoids, acids, vitamin C, spicules and occlusives, privately in your browser.

City
Clinic Preference
Or try a sample routine:

Empirical Buyer Synthesis

What Buyers Actually Report

[r/SkincareAddiction]: The benchmark L-ascorbic acid serum — the brand states 15% L-ascorbic acid, 1% alpha-tocopherol and 0.5% ferulic acid at low pH. Efficacy is well regarded, but the price is the main complaint and it oxidises (turns orange) within a few months of opening. Timeless 20% C + E Ferulic is the most cited budget equivalent.

Verbatim INCI Composition

Full Ingredient List

Aqua/Water, Dipropylene Glycol, Ascorbic Acid, Glycerin, Laureth-23, Phenoxyethanol, Tocopherol, Ferulic Acid, Sodium Hyaluronate

Source: incidecoder.com. Check the pack — formulas change.

Section V · Compare

Compare Against Peer Formulations

C E Ferulic (vs. Timeless 20% Vitamin C + E Ferulic Dupe) beside the closest formulations in the index — same active family first, then the nearest related one — with a routine-conflict and washout summary.

Compare with 2 peers →

Field Notes

Frequently Asked Questions

Is SkinCeuticals C E Ferulic (vs. Timeless 20% Vitamin C + E Ferulic Dupe) worth it?

Beauty.net verdict: Holy Grail. Creator hype 86/100 against buyer efficacy 88/100. [r/SkincareAddiction]: The benchmark L-ascorbic acid serum — the brand states 15% L-ascorbic acid, 1% alpha-tocopherol and 0.5% ferulic acid at low pH. Efficacy is well regarded, but the price is the main complaint and it oxidises (turns orange) within a few months of opening. Timeless 20% C + E Ferulic is the most cited budget equivalent. Best for: Photoaged, dull or pigment-prone skin (AM, under SPF).

What should I not mix with SkinCeuticals C E Ferulic (vs. Timeless 20% Vitamin C + E Ferulic Dupe)?

Retinoids (same routine) Benzoyl Peroxide AHA / BHA (same routine) Silica Spicules (Reedle Shot) Run your full routine through the Regimen Clash Check to catch other conflicts.

What is a cheaper dupe or chemical equivalent for SkinCeuticals C E Ferulic (vs. Timeless 20% Vitamin C + E Ferulic Dupe)?

Timeless Skin Care 20% Vitamin C + E Ferulic Acid Serum (~$30 — 20% L-ascorbic acid, 1% vitamin E, 1% ferulic acid) Compare the INCI lists — a shared hero active matters more than the brand.