Dr. Brenner Vitamin C Serum
Updated Nov 8, 2026 · Top Vitamin C Serum for face
Best for Another 15-to-20 percent ascorbic acid serum, if it arrives clear.
Dr. Brenner's serum of L-ascorbic acid with ferulic acid, vitamin E, and hyaluronic acid, in a 1.01 oz bottle. Chemist Confessions included it in the same three-week heat test as Timeless and Maelove. It started clear and then yellowed, which is normal for this kind of formula once it is warm and open. Gas and a dark color on day one are not normal. The test did not measure how much vitamin C was left, only color, smell, and separation. Store it in the dark. Pair it with sunscreen. A brown bottle is a used-up active, not a stronger one.
What customers like
- Improves skin texture and tone making it smooth supple and bright.
- Noticeable antiaging effects such as reduced wrinkles and a more youthful appearance.
- Contains highquality ingredients like 20% Pure LAscorbic Acid Ferulic Acid Vitamin E and Hyaluronic Acid.
- Comparable to highend brands like Skinceuticals but at a fraction of the price.
- Positive effects on sensitive skin with some users experiencing no irritation.
- Can be refrigerated to extend shelf life and maintain effectiveness.
What customers dislike
- Has a distinct smell that some users may find unpleasant.
- May not be effective for everyone with some users reporting no noticeable changes.
- Can cause breakouts or irritation in individuals with sensitive skin.
- The product may arrive with a yellowish color indicating oxidation and loss of efficacy.
- Very liquid consistency which might not appeal to all users.
- Form
- L-ascorbic acid, ferulic acid, vitamin E
- Size
- 1.01 fl oz
- Stability
- Clear when fresh; yellows with heat and air
Sources: Chemist Confessions: Dr. Brenner started clear, then yellowed · Dr. Brenner listing: L-ascorbic acid, ferulic acid, vitamin E
