Covalent C-15 Brightening Concentrate
15% L-ascorbic acid with ferulic complex
The workhorse morning antioxidant. Fifteen percent L-ascorbic acid at pH 3.1, stabilized with ferulic acid and vitamin E in the classic 15-1-1 ratio, in amber airless packaging that protects potency to the last dose.
Daily use brightens tone, softens the look of post-inflammatory marks, and gives photodamage nowhere to hide. It layers cleanly beneath sunscreen and makeup without pilling.
- 15% L-ascorbic acid, 1% vitamin E, 1% ferulic acid
- pH 3.1 for absorption without sting
- Amber airless bottle, 30 mL
- Use mornings under SPF
Product Information+
Shipping & Returns+
Delivery typically takes 3-7 business days. Temperature-sensitive items ship express cold-chain in insulated, tracked packaging.
30-day returns on unopened, seal-intact items; injectables and cold-chain products are non-returnable once shipped. See our Returns & Refunds policy for details.
Fulfilled by Covalent
4.3
4 reviews
Felix D.
Layers well with everything
No pilling under sunscreen or makeup, which was my problem with the last two I tried. Sinks in before I have finished the other side of my face.
Rowan P.
Good, though give it time
No dramatic overnight change, so temper expectations. By week six the difference in my before photos was obvious enough that two colleagues asked what I had changed.
Callum D.
Does what it claims
Absorbs in seconds and layers cleanly under everything else. The only thing I would change is a larger size option.
Aisha J.
We stock it for aftercare now
Bought a single unit to try on myself before recommending it. Patients report the same thing I did: comfortable, no stinging, and the bottle lasts about ten weeks at nightly use.