Compare Products: Ascorbyl Glucoside Solution 12% vs 20% Vitamin C + E Ferulic Acid Serum

Who It's Designed For

The Ordinary
  • Vitamin C beginners who want a low-irritation starting point
  • Sensitive skin types who cannot tolerate L-ascorbic acid
  • Those who want a stable vitamin C that will not oxidize in the bottle
  • Budget-conscious shoppers seeking a no-frills vitamin C serum
  • Users who prefer ultra-minimalist ingredient lists
Timeless
  • Those seeking the CE Ferulic combination at an affordable price
  • Users comfortable with high-concentration L-ascorbic acid
  • People looking for a research-backed antioxidant serum
  • Budget-conscious shoppers who want SkinCeuticals-level actives
  • Users who prefer fragrance-free, minimalist formulas

Key Ingredients

The Ordinary

12% Ascorbyl Glucoside

Timeless

20% L-Ascorbic Acid, 1% Vitamin E (Alpha Tocopherol), 1% Ferulic Acid, Sodium Hyaluronate, Panthenol

Product Composition

14% similarity (3 ingredients in common)

Shared Ingredients
aqua (water)ethoxydiglycoltrisodium ethylenediamine disuccinate
Only in The Ordinary (10)
ascorbyl glucosidepropanediolaminomethyl propanoltriethanolamineisoceteth-20xanthan gumdimethyl isosorbide12-hexanediolcaprylyl glycol
Only in Timeless (8)
l-ascorbic acidpropylene glycolalpha tocopherolpolysorbate 80panthenolferulic acidbenzyl alcoholdehydroacetic acid

User Feedback Patterns

The Ordinary
Beginner-friendly and non-irritating

The most common positive feedback is that this product causes no irritation. Users with sensitive skin, rosacea-prone skin, and vitamin C beginners praise its gentleness.

Slow but steady brightening

Users who use it consistently for 8+ weeks report gradual brightening and more even skin tone. Results are subtle rather than dramatic.

Some find it too mild

Users coming from L-ascorbic acid serums or expecting fast results find the effects underwhelming. Several reviewers switched to more potent vitamin C products.

Great texture for layering

The thin, watery texture layers well under other products. No stickiness, pilling, or interference with subsequent skincare or makeup steps.

Timeless
Effective and affordable CE Ferulic

The most common praise is that it delivers results comparable to SkinCeuticals at a fraction of the cost. Users report brightening, improved tone, and visible glow within 2-4 weeks.

Reddit favorite

Consistently ranked among the top vitamin C serums on Reddit. r/SkincareAddiction and r/30PlusSkinCare frequently recommend it as the best value CE Ferulic serum.

Oxidation is the main complaint

Users report the serum darkening within 4-8 weeks, sometimes faster in warm climates. Several recommend buying smaller sizes and refrigerating immediately.

Stinging on initial use

The 20% concentration causes noticeable stinging for most users during the first 1-2 weeks. This typically subsides as skin adjusts.

Which Should You Buy?

The Ordinary Ascorbyl Glucoside Solution 12% offers great value at a lower price point. Timeless 20% Vitamin C + E Ferulic Acid Serum may be worth the premium if you want 20% L-Ascorbic Acid.

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