Paula's Choice BOOST C15 Vitamin C Face Serum 15% L‑Ascorbic Acid, Brightening & Antioxidant Support (0.67 oz)

This updated formula combines a potent dose of pure vitamin C with supporting antioxidants to target dullness, uneven tone, and the visible signs of aging. Lightweight and fast-absorbing, the Booster mixes easily into your routine or can be used alone for targeted results. The formula emphasizes stability and gentle performance so it can be used by many skin types, including those prone to sensitivity.

How quickly will I notice brighter-looking skin?

Many users report an immediate improvement in skin glow within minutes due to the serum's light-reflecting and brightening activity. Visible, longer-term changes in tone and clarity typically develop with consistent use over several weeks as the skin renews and hyperpigmentation fades.

• 15% pure L-ascorbic acid for immediate brightening impact
• Fast-absorbing texture that layers under moisturizers and SPF
• Results usually increase after multiple weeks of daily use

Will this high-strength vitamin C irritate sensitive skin?

The formula is engineered to balance potency with skin tolerance by combining vitamin C with stabilizing antioxidants and gentle ingredients. While many with sensitive skin tolerate it well, start with every-other-day application and perform a patch test to assess reaction before full-face use.

• Contains ferulic acid and ergothioneine to support antioxidant stability
• Gentle base ingredients reduce likelihood of irritation compared with harsher vehicles
• Recommend gradual introduction and patch testing for sensitive skin

How should I incorporate the Booster into my skincare routine?

Apply to clean, dry skin after toner and before moisturizer and sunscreen in the morning, or as part of an evening routine. If you combine it with other active treatments, introduce one product at a time and monitor tolerance to avoid over-exfoliation or sensitivity.

• Use a few drops on face, neck, and décolleté after cleansing
• Follow with moisturizer and broad-spectrum sunscreen during daytime use
• Layer with gentle hydrators and avoid mixing with strong exfoliating acids at first

What supports the stability and performance of this vitamin C serum?

Beyond L-ascorbic acid, the serum includes ferulic acid and ergothioneine, antioxidants that enhance vitamin C's effectiveness and help defend against oxidative stress. The combined antioxidant system improves resilience and promotes a more even-looking complexion while maintaining a stable, effective formulation.

• Ferulic acid helps protect against environmental stressors and boosts vitamin C activity
• Ergothioneine supports antioxidant capacity and skin resilience
• Formulation optimized for stability to maintain potency over time

Who is this for: Paula's Choice BOOST C15 Super Booster is intended for people seeking a potent, fast-absorbing vitamin C serum to brighten skin, improve the look of fine lines, and even tone. It's formulated for all skin types, including those who want effective antioxidant support without overly harsh carriers; beginners should introduce it gradually, while experienced vitamin C users can apply it more frequently for stronger results.

Ingredients

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