NEOSTRATA Vitamin C Face Serum 15% L‑Ascorbic Acid, 0.5 fl oz — PHA Exfoliating Brightening with Green Tea

NEOSTRATA 15% Vitamin C Face Serum is a lightweight daily brightening concentrate that blends 15% L-ascorbic acid with gluconolactone (PHA) and antioxidant botanicals to even tone, renew surface skin and help protect against environmental stressors.

This serum combines a high-concentration pure Vitamin C with a gentle polyhydroxy acid (PHA) and soothing botanicals to deliver visible brightening and smoother-feeling skin without heavy residue. Formulated to absorb quickly, it layers under moisturizers and sunscreen and can be used as part of a morning or evening routine for a clearer, more radiant appearance.

How does this serum brighten uneven skin tone?

The formula uses 15% L-ascorbic acid (pure Vitamin C) to target visible discoloration while gluconolactone (a PHA) helps to exfoliate the outermost skin layers gently. This combination promotes fresher surface skin so the Vitamin C can penetrate more effectively for improved tone and radiance.

• 15% L-ascorbic acid to address visible dark spots and dullness
• Gluconolactone (PHA) provides gentle chemical exfoliation
• Feverfew and green tea deliver antioxidant support
• Lightweight, fast-absorbing texture for layering under skincare

Will this formula irritate sensitive or reactive skin?

Gluconolactone (PHA) is chosen for its milder exfoliating profile compared with stronger acids, and added botanicals help calm the skin. However, because the serum contains a high concentration of L-ascorbic acid, those with very reactive skin should introduce it gradually and patch-test first.

• PHA is less likely to cause irritation than traditional AHAs
• Start with every-other-day use if you have sensitivity
• Patch-test a small area before full-face application
• Pair with moisturizer and sunscreen to minimize potential dryness

How should I use it in my skincare routine for best results?

Apply a few drops to clean, dry skin once daily—morning or evening—before moisturizer. In the morning, follow with broad-spectrum SPF; in the evening, follow with hydrator or oil as needed. Consistent use provides the best outcome for tone and radiance.

• Cleanse, then apply 2–3 drops to face and neck
• Allow absorption for a minute before layering moisturizer
• Always follow daytime use with sunscreen
• Use daily for visible improvement over weeks

What results can I expect and how soon?

With routine use, many see improved brightness and a more even-looking complexion within weeks, as the PHA helps renew surface skin and the Vitamin C addresses discoloration. Individual results vary depending on baseline skin condition and consistency of use.

• Smoother-feeling skin from gentle surface exfoliation
• Reduced appearance of dullness and some dark spots over time
• Antioxidant protection to help minimize environmental stress effects
• Lightweight serum that layers easily in daily routines

Who is this for: NEOSTRATA 15% Vitamin C Face Serum is geared toward anyone seeking a potent brightening serum that combines high-strength pure Vitamin C with a gentle PHA for surface renewal. It suits users looking to fade visible discoloration and improve overall radiance while maintaining a lightweight, fast-absorbing feel—ideal for those who want clinical-grade active ingredients in a daily routine. If you have highly sensitive skin, begin with reduced frequency and perform a patch test before regular use.

Ingredients

Propanediol, Aqua/Water/Eau, Ascorbic Acid, Gluconolactone, Citric Acid, Epigallocatechin Gallate, Chrysanthemum Parthenium (Feverfew) Flower/Leaf/Stem Juice, Pentylene Glycol, Sodium Metabisulfite, Sodium Hydroxide, Caprylyl Glycol, Sodium Benzoate, Potassium Sorbate, Phenoxyethanol