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Paula's Choice C15 Super Booster ingredients: is it worth it?
This is a clinically strong, chemistry-sound 15% L‑ascorbic acid serum that earns its hype and delivers real brightening and anti-aging benefits.
This is a clinically strong, chemistry-sound 15% L‑ascorbic acid serum that earns its hype and delivers real brightening and anti-aging benefits.
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The formula uses an S Tier combo of 15% L‑ascorbic acid at an optimized pH ~3.1–3.5, plus ferulic acid and vitamin E for stability and synergistic antioxidant protection, with added ergothioneine and peptides for extra anti-aging—giving it a high efficacy score despite being water-based and likely needing consistent use and proper storage due to the inherent instability of L‑ascorbic acid.
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DemythSkin rates Paula's Choice C15 Super Booster 4.6/5 for efficacy and 4.5/5 for safety.
ACTIVE INGREDIENTS BY TIER
Gold Standards
High clinical proof | Skin-transformativeReliable
Proven resultsPotent
Developing evidenceOverhyped | Marketing
Hype | Limited dataDocumented Irritants
Evidence-backed flagFORMULATION BASE (9)⌄
FULL INGREDIENT LIST⌄
Water (Aqua/Eau), Ascorbic Acid, Glycerin, Ethoxydiglycol, PPG-26-Buteth-26, Mannitol, Tridecapeptide-1, Palmitoyl Tripeptide-5, Ergothioneine, Sodium Hyaluronate, Pentylene Glycol, PEG-40 Hydrogenated Castor Oil, Bisabolol, Sodium Gluconate, Decylene Glycol, Ferulic Acid, Oryza Sativa (Rice) Bran Extract, Tocopherol, Polyacrylate Crosspolymer-6, 1,2-Hexanediol, Panthenol, Sodium Phytate, Sodium Hydroxide, Citric Acid, Phenoxyethanol.
WHAT EACH INGREDIENT DOES (24)⌄
- Water (Aqua/Eau)
- Solvent base
- Ascorbic Acid (15%)
- S Tier brightening antioxidant
- Glycerin
- Humectant hydration
- Ethoxydiglycol
- Solvent, penetration enhancer
- PPG-26-Buteth-26
- Solubilizer, texture aid
- Mannitol
- Humectant, antioxidant sugar alcohol
- Tridecapeptide-1
- Signal peptide, anti-aging support
- Palmitoyl Tripeptide-5
- Collagen-support peptide
- Ergothioneine
- Potent antioxidant cofactor
- Sodium Hyaluronate
- Hyaluronic acid humectant
- Pentylene Glycol
- Humectant, solvent
- PEG-40 Hydrogenated Castor Oil
- Solubilizer, mild surfactant
- Bisabolol
- Soothing anti-irritant
- Sodium Gluconate
- Chelator, humectant
- Decylene Glycol
- Antimicrobial, humectant
- Ferulic Acid
- S Tier antioxidant, stabilizes vitamin C
- Oryza Sativa (Rice) Bran Extract
- Antioxidant botanical
- Tocopherol (Vitamin E)
- Antioxidant, supports photoprotection
- Polyacrylate Crosspolymer-6
- Texture thickener, stabilizer
- 1,2-Hexanediol
- Solvent, preservative booster
- Panthenol
- Humectant, soothing
- Sodium Phytate
- Chelating agent, stability support
- Sodium Hydroxide
- pH adjuster
- Citric Acid
- pH adjuster, mild chelator
EXTERNAL CITATIONS
Ascorbic Acid: 15% L‑ascorbic acid at pH 3–3.5 is clinically validated to improve hyperpigmentation, fine lines, and photodamage when used regularly with sunscreen; this formula is explicitly stated by Paula’s Choice to contain 15% stabilized vitamin C at pH 3.1–3.5.
Ferulic Acid: Ferulic acid in combination with L‑ascorbic acid and vitamin E has been shown to increase photoprotection and stability of vitamin C in several clinical and in vitro studies; Paula’s Choice highlights ferulic acid here for defending against discoloration and boosting vitamin C’s stability.
Ergothioneine: Ergothioneine is a thiol-based antioxidant that can cooperate with vitamin C and glutathione systems to reduce oxidative stress; Paula’s Choice specifically added it in the updated C15 to boost efficacy and improve uneven tone.
Palmitoyl Tripeptide-5: Palmitoyl tripeptide‑5 is a synthetic peptide reported to signal collagen synthesis and improve firmness in some in vitro and limited clinical data; Paula’s Choice markets this peptide in C15 as part of its anti-aging blend.
Tridecapeptide-1: Tridecapeptide‑1 is a signaling peptide; while human data are limited, it is positioned in the upper INCI and used by the brand in an anti-aging context to support smoother, firmer skin.
DISCLAIMER: THIS ANALYSIS IS FOR INFORMATION ONLY. NOT MEDICAL ADVICE. AI-GENERATED DATA BASED ON PUBLICLY AVAILABLE INGREDIENT LISTS. VERIFY WITH A MEDICAL PROFESSIONAL.
A cheaper serum with a close formula
58% formula match, by ingredient list. Labels don't state amounts, so strengths may differ.
Paula's Choice C15 Super Booster: common questions
Is Paula's Choice C15 Super Booster worth it?
Paula's Choice C15 Super Booster scores 4.6 out of 5.0 for efficacy (Gold Standard) and 4.5 out of 5.0 for safety (Very Gentle) on DemythSkin's independent ingredient analysis. This is a clinically strong, chemistry-sound 15% L‑ascorbic acid serum that earns its hype and delivers real brightening and anti-aging benefits.
What are the key active ingredients in Paula's Choice C15 Super Booster?
Paula's Choice C15 Super Booster contains these gold-standard actives with strong clinical evidence: Ascorbic Acid (15%).
Does Paula's Choice C15 Super Booster contain fragrance or known irritants?
DemythSkin's analysis found no flagged irritants in Paula's Choice C15 Super Booster. It scores 4.5 out of 5.0 for safety.
How is Paula's Choice C15 Super Booster scored?
DemythSkin grades every product on two independent scores: efficacy (whether the ingredients have clinical evidence of working) and safety (irritation and sensitisation risk). Ingredients are graded S through D against a database of over 3,000 compounds. Brand and price are not part of the score, and no brand pays for one.
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