C15 Super Booster Review
15% L-ascorbic acid with ferulic acid and tocopherol, sold in the US as the C15 Brightening Super Booster at $59.00 for 20 ml and in the UK at Cult Beauty at GBP 54.00. The 2026 US formula is a streamlined 17-ingredient list: ethoxydiglycol sits sixth, sodium hydroxide is the pH adjuster, bisabolol is the anti-irritant, and the peptides and ergothioneine of the previous version are gone. At 20 ml it is the priciest per ounce of the six.
- Rank
- Not ranked
- Current price
- $59.00
- Listed size
- 0.67 oz
- Updated
Editor’s cut
At a glance
15% L-ascorbic acid with ferulic acid and tocopherol, sold in the US as the C15 Brightening Super Booster at $59.00 for 20 ml and in the UK at Cult Beauty at GBP 54.00. The 2026 US formula is a streamlined 17-ingredient list: ethoxydiglycol sits sixth, sodium hydroxide is the pH adjuster, bisabolol is the anti-irritant, and the peptides and ergothioneine of the previous version are gone. At 20 ml it is the priciest per ounce of the six.
$59.00 for 0.67 oz.
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Our editors are currently researching C15 Super Booster by Paula's Choice. Check back for the full evidence review, ingredient analysis, pros and cons, and our independent verdict.
15% L-ascorbic acid with ferulic acid and tocopherol, sold in the US as the C15 Brightening Super Booster at $59.00 for 20 ml and in the UK at Cult Beauty at GBP 54.00. The 2026 US formula is a streamlined 17-ingredient list: ethoxydiglycol sits sixth, sodium hydroxide is the pH adjuster, bisabolol is the anti-irritant, and the peptides and ergothioneine of the previous version are gone. At 20 ml it is the priciest per ounce of the six.