Dr. Brenner Vitamin C Serum 20% L-ascorbic Acid, 1 oz — Ferulic Acid & Hyaluronic Hydration

Dr. Brenner Vitamin C Serum is a 20% pure L‑ascorbic acid formula blended with ferulic acid, vitamin E and hyaluronic acid to support brighter, more even-looking skin.

This serum combines a high concentration of pure L‑ascorbic acid (20%) with stabilizing antioxidants and moisture‑binding hyaluronic acid. It’s made in small batches to preserve potency and is presented in a 1 oz bottle designed for daily facial and eye-area use. The formulation aims to address visible unevenness, dullness, and the look of fine lines through antioxidant support and temporary skin-smoothing hydration.

How should I add this vitamin C serum to my daily skincare routine?

Apply the serum after cleansing and before heavier creams or sunscreens. Use a few drops across face and around eyes, then allow it to absorb for a minute or two before following with moisturizer and SPF in the morning.

• Recommended: morning use under sunscreen for antioxidant support.
• Apply to clean, slightly damp or dry skin for best spreadability.
• Start 2–3 times weekly if you have sensitive skin, then increase to daily.
• Store away from direct sunlight and check the expiration date on the label.

What ingredients are in this serum and why do they matter?

The blend centers on pure L‑ascorbic acid (20%) for antioxidant activity, supported by ferulic acid and vitamin E to enhance stability and performance. Hyaluronic acid provides immediate hydration for a smoother surface appearance, while the small‑batch production helps maintain ingredient effectiveness.

• 20% L‑ascorbic acid: concentrated form of vitamin C used for antioxidant support.
• Ferulic acid + vitamin E: stabilizers that complement vitamin C.
• Hyaluronic acid: attracts and holds moisture for a plumping effect.
• Made every two weeks to ensure freshness and active potency.

How soon will I notice changes and what can I realistically expect?

Individual results vary; some users report improved brightness and smoother texture within weeks, while fuller changes to tone and fine lines usually take consistent use over months. Expect temporary hydration and an immediate smoothing effect, with gradual visible differences in radiance and evenness.

• Immediate: hydration and a smoother surface from hyaluronic acid.
• Weeks: improved skin brightness and reduced appearance of dullness.
• Months: more noticeable evening of complexion with regular use.
• Consult patch testing if you have sensitive or reactive skin.

Are there any storage or safety tips I should follow?

Because pure L‑ascorbic acid can oxidize and darken over time, store the bottle in a cool, dry place out of direct light to preserve freshness. The product color may vary naturally; always check the expiration date printed on the back label.

• Keep cap tightly closed and store away from heat and sunlight.
• Use within recommended timeframe after opening and follow expiration date.
• Discontinue if you experience persistent irritation and consult a dermatologist.
• Freshly manufactured in small batches to keep active ingredients potent.

Who is this for: This serum is suited for individuals seeking a potent, antioxidant‑forward topical option to support brighter, more even‑looking skin and temporary hydration. It’s appropriate for people comfortable with a concentrated vitamin C product (20% L‑ascorbic acid) and those who will follow storage and gradual introduction guidelines; people with very sensitive or compromised skin should patch test or consult a skin professional before use.

Ingredients

Ingredients: Water, Ethoxydiglycol, L-Ascorbic Acid (Vitamin C), Propylene Glycol, Glycerin, Laureth-23, Tocopherol (Vitamin E), Sodium Hyaluronate (Hyaluronic Acid ), Ferulic Acid, Panthenol, Triethanolamine, Phenoxyethanol.