SkinCeuticals C E Ferulic with 15% L-Ascorbic Acid
Links may contain affiliate codes.
Formulation Summary
The original CE Ferulic serum and the industry benchmark for vitamin C antioxidant products. Contains 15% L-ascorbic acid, 1% vitamin E, and 0.5% ferulic acid based on patented research by the brand's founder. The formula has only 12 ingredients. It is the most referenced vitamin C serum in dermatological practice and the product that spawned an entire category of CE Ferulic dupes.
SkinCeuticals' formulation is based on Dr. Sheldon Pinnell's published research showing that combining 15% L-ascorbic acid with 1% vitamin E and 0.5% ferulic acid at pH below 3.5 provides synergistic photoprotection that exceeds each ingredient alone. Ferulic acid doubles the photoprotection and stabilizes the formula. The specific ratios and pH requirements are patented. Ethoxydiglycol is the primary solvent and penetration enhancer. The formula is deliberately minimal: 12 ingredients with no fragrance, no silicones, no botanical extracts.
Quick Facts
Designed For
- •Those who want the research-backed gold standard in vitamin C serums
- •Users willing to pay premium pricing for clinical-grade formulation
- •People seeking the specific patented CE Ferulic ratio (15%/1%/0.5%)
- •Those whose dermatologists recommend medical-grade vitamin C
- •Users looking for maximum photoprotection alongside sunscreen
May Not Suit
- •Budget-conscious shoppers ($182 for 30ml; dupes with similar actives cost $25-55)
- •Users with sensitive skin who cannot tolerate 15% L-ascorbic acid
- •Those sensitive to the strong metallic/acidic scent
- •People who want a stable product that does not oxidize (this darkens within weeks)
- •Cruelty-free shoppers (SkinCeuticals is owned by L'Oreal and is not cruelty-free)
Key Ingredients
| Ingredient | Concentration | Function |
|---|---|---|
| L-Ascorbic Acid | 15%brand-confirmed | Pure vitamin C at the concentration established by the brand's founder as optimal. Research by Dr. Pinnell showed maximal tissue concentration at 15-20%. At 15%, this balances efficacy with tolerability. |
| Alpha Tocopherol (Vitamin E) | 1%brand-confirmed | Fat-soluble antioxidant. The CE combination provides synergistic photoprotection greater than either alone. Vitamin E also regenerates oxidized vitamin C. |
| Ferulic Acid | 0.5%brand-confirmed | The key stabilizer and photoprotection enhancer. A 2005 study showed 0.5% ferulic acid doubles the photoprotection of the CE combination. This research forms the basis of SkinCeuticals' patent. |
| Sodium Hyaluronate | — | Hyaluronic acid salt for hydration. Listed last, suggesting a low concentration. Provides mild hydrating support. |
| Panthenol | — | Provitamin B5 for soothing and moisture retention. Helps offset potential dryness from the low-pH formula. |
The Formulation Explained
The original CE Ferulic patent
Dr. Sheldon Pinnell published the foundational research showing that 0.5% ferulic acid doubles the photoprotection of a 15% vitamin C + 1% vitamin E combination. SkinCeuticals holds the patent on this specific formulation. While other brands replicate the approach, SkinCeuticals is the only brand that developed and patented the original research.
Why it costs $182
The premium price reflects the brand's medical-grade positioning, patent protection, and dermatologist distribution model. The actual ingredients are not expensive; many brands offer near-identical formulations for $25-55. The price reflects brand equity, clinical validation, and distribution costs rather than unique ingredients.
12-ingredient minimalism
With only 12 ingredients, this is one of the most focused vitamin C serums available. No fragrance, no silicones, no botanical extracts. Every ingredient serves a direct function: actives, solvents, emulsifiers, pH adjusters, preservative, and hydration support. The formula trusts the three core actives entirely.
Oxidation reality
Despite being the benchmark product, CE Ferulic oxidizes like all L-ascorbic acid serums. Users commonly report color change within 4-8 weeks. SkinCeuticals uses brown glass bottles to slow light exposure. Refrigeration extends shelf life. At $182, the oxidation issue feels more acute; paying premium does not buy stability.
Ingredients to Know
Penetration enhancer and primary solvent. Listed second after water, indicating a very high concentration. Essential for delivering L-ascorbic acid into the skin. Used by virtually all CE Ferulic dupe formulations.
Humectant and co-solvent. Generally well tolerated but may cause reactions in propylene glycol-sensitive individuals.
Emulsifier that helps the oil-soluble vitamin E mix into the water-based formula. Present at a low concentration.
pH adjuster. Used to bring the formula to the critical pH below 3.5 required for L-ascorbic acid penetration.
User Feedback Patterns
Full INCI List
12 ingredients · Click "Show full list" to view
About SkinCeuticals
SkinCeuticals discloses all three key active concentrations: 15% L-ascorbic acid, 1% alpha tocopherol, 0.5% ferulic acid. Full INCI lists are provided. The brand publishes peer-reviewed research supporting their formulations. More transparent about active concentrations than most vitamin C brands.
Compare with Similar Products
Related Comparisons
More in Vitamin C Serums
All comparisons featuring SkinCeuticals C E Ferulic with 15% L-Ascorbic Acid
Side-by-side ingredient comparisons against every other product in our catalog.
- vs COSRX The Niacinamide 15 Serum
- vs Glow Recipe Watermelon Glow Niacinamide Dew Drops
- vs Good Molecules Niacinamide Brightening Toner
- vs La Roche Posay Mela B3 Serum
- vs Naturium Niacinamide Serum 12% Plus Zinc 2%
- vs Paula's Choice 10% Niacinamide Booster
- vs Paula's Choice Clinical Niacinamide 20% Treatment
- vs Peach & Lily Glass Skin Refining Serum
- vs Sunday Riley B3 Nice 10% Niacinamide Serum
- vs The Inkey List Niacinamide Oil Control Serum
- vs The Inkey List SuperSolutions 20% Niacinamide Serum
- vs The Ordinary Niacinamide 10% + Zinc 1% Serum
- vs Versed Just Breathe Clarifying Serum
- vs Anua PDRN Hyaluronic Acid 100 Cream
- vs CeraVe PM Facial Moisturizing Lotion
- vs Dr. Althea 345 Relief Cream
- vs EQQUALBERRY NAD+ Peptide Boosting Cream
- vs EQQUALBERRY Vitamin Illuminating Cream
- vs L'Oreal Paris Collagen Moisture Filler Day/Night Cream
- vs La Roche-Posay Toleriane Double Repair Face Moisturizer
- vs La Roche-Posay Cicaplast Baume B5+
- vs Medicube PDRN Pink Collagen Capsule Cream
- vs Medicube Deep Vita C Capsule Cream
- vs Stratia Lipid Gold
- vs Bliss Bright Idea Vitamin C + Tri-Peptide Face Serum
- vs Drunk Elephant C-Firma Fresh Day Serum
- vs Eight Saints Seeking C Vitamin C Face Serum
- vs EQQUALBERRY Vitamin Illuminating Serum
- vs La Roche-Posay 10% Pure Vitamin C Anti-Aging Face Serum
- vs Maelove The Glow Maker
- vs Melano CC Intensive Anti-Spot Essence
- vs Paula's Choice C15 Super Booster
- vs Sunday Riley C.E.O. 15% Vitamin C Brightening Serum
- vs The Ordinary Ascorbyl Glucoside Solution 12%
- vs The Ordinary Vitamin C Suspension 23% + HA Spheres 2%
- vs Timeless 20% Vitamin C + E Ferulic Acid Serum
- vs TruSkin Vitamin C Serum for Face
- vs Vibriance Super C Serum
Sources
- • https://www.skinceuticals.com/skincare/vitamin-c-serums/c-e-ferulic-with-15-l-ascorbic-acid/S17.html
- • https://incidecoder.com/products/skinceuticals-c-e-ferulic
- • https://skinsort.com/products/skinceuticals/c-e-ferulic-with-15-l-ascorbic-acid
- • https://www.dermstore.com/p/skinceuticals-c-e-ferulic-with-15-l-ascorbic-acid-vitamin-c-serum-30ml/11289609/
- • https://www.reviewed.com/beauty/content/skinceuticals-c-e-ferulic-review
Last updated: 2026-03
Rating Scales
Comedogenicity (0-5)
Likelihood of clogging pores. 0 = won't clog, 1-2 = low, 3 = moderate, 4-5 = high.
Irritancy (0-5)
Potential for skin irritation. 0 = non-irritating, 1-2 = low, 3 = moderate, 4-5 = high.
Ratings based on published ingredient studies. Individual reactions may vary.