Paula's Choice C15 Super Booster — Efficacy 4.6/5.0, Safety 4.6/5.0 | DemythSkin
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[ DemythSkin Verdict ]
Paula's Choice C15 Super Booster

Paula's Choice C15 Super Booster

SerumBrightening
Efficacy
Exceptional
4.6 / 5.0
Safety
Safe
4.6 / 5.0
System Verdict
This is a clinically strong, chemistry-sound 15% L‑ascorbic acid serum that earns its hype and delivers real brightening and anti-aging benefits. 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.
Active Ingredients Detected
S Tier: Gold StandardsHigh Clinical Proof | Skin-Transformative
Ascorbic Acid (15%)
A Tier: Good BasicsProven Results
Water (Aqua/Eau)GlycerinSodium HyaluronateBisabololFerulic AcidTocopherol (Vitamin E)Panthenol
B Tier: Supporting IngredientsPromising Ingredients
EthoxydiglycolPPG-26-Buteth-26MannitolTridecapeptide-1Palmitoyl Tripeptide-5ErgothioneinePentylene GlycolPEG-40 Hydrogenated Castor OilSodium GluconateDecylene GlycolPolyacrylate Crosspolymer-61,2-HexanediolSodium PhytateSodium HydroxideCitric AcidPhenoxyethanol
C Tier: Marketing IdolsHype | Limited or Weak Data
Oryza Sativa (Rice) Bran Extract
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DemythSkin is an independent ingredient analyzer. Scores are computed by a deterministic rubric from published clinical evidence — no brand pays for a score.