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Vitamin C 20% Skin Serum

Concentrated L-Ascorbic Acid Antioxidant Serum

Vitamin C 20% Skin Serum is a concentrated pharmacist-formulated facial serum featuring 20% L-Ascorbic Acid — the biologically active form of Vitamin C — together with Caffeine Citrate and a carefully selected blend of antioxidant, moisturizing and skin-supportive ingredients.

Designed for aging and environmentally stressed skin, this formula helps support brighter, smoother and more even-looking skin while providing antioxidant protection against oxidative stress.

Why 20% L-Ascorbic Acid?

L-Ascorbic Acid is the biologically active form of Vitamin C and one of the most extensively studied topical antioxidants in SKINcare.

Vitamin C plays an important role in normal collagen synthesis and helps protect against oxidative stress associated with environmental exposure and aging. Topical Vitamin C has also been studied for its effects on photoaged skin, uneven pigmentation and the appearance of fine lines.

More Than Vitamin C

The supporting ingredients make this much more than a basic Vitamin C serum.

Caffeine Citrate — Provides additional antioxidant support and complements the formula for brighter, more refreshed-looking skin.

Beta Fructan — A skin-conditioning polysaccharide that helps support hydration and the skin barrier.

D-Beta Glucosamine — Provides additional skin-conditioning support and complements the formula’s approach to smoother, more even-looking skin.

Aminoguanidine — Included for its interesting role in glycation-related chemistry, an area of particular interest in aging skin.

Phenyl Butyl Nitrone (PBN) — A spin-trapping antioxidant that adds another dimension to the formula’s antioxidant strategy.

Glycerol + Castor Seed Oil — Help moisturize, soften and condition the skin.

Witch Hazel Extract — Provides botanical skin-conditioning and astringent support.

A Thoughtfully Designed Antioxidant Formula

What makes this serum distinctive is that it isn’t simply Vitamin C added to a base. 20% L-Ascorbic Acid is the centerpiece of a broader antioxidant and skin-supportive formulation, with ingredients thoughtfully selected to complement one another.

Suggested Use

Apply a small amount to clean skin in the morning according to skin tolerance. May be used with Face Rx Peptides + Glutathione as part of your morning SKINcare routine. Follow with sunscreen during daytime use.

Ingredients: Aqua (Water), L-Ascorbic Acid 20%, Oryza Sativa (Rice) Starch, Glycerol, Caffeine Citrate, Beta Fructan, D-Beta Glucosamine, Aminoguanidine, Ricinus Communis (Castor) Seed Oil, Hamamelis Virginiana (Witch Hazel) Extract, Phenyl Butyl Nitrone.

1 fl. oz. | 30 mL

Learn More: Healthy Skin Starts with Science