Vitamin C Serum
A high-concentration Vitamin C serum for even skin tone and brightening, protected against oxidation through a stable form and light-blocking packaging.
Vitamin C is one of the most sought-after yet hardest-to-formulate ingredients in the brightening serum category — it oxidizes quickly on air exposure and can lose potency. That's why we work with you to choose the form that best fits your brand, from L-ascorbic acid to more stable derivatives like sodium ascorbyl phosphate, and protect shelf life with light-blocking amber bottles or airless pump packaging. Formulated at a high concentration for a morning routine targeting tonal unevenness and dullness.
- Formulated with L-ascorbic acid or stable derivative options
- Light-blocking amber bottle / airless pump packaging against oxidation
- High concentration targeting the look of tonal unevenness and dullness
- Antioxidant support suited to a morning routine
- Custom form and concentration selection under your brand
Want to manufacture under your own brand?
Manufactured to GMP standards, delivered with an MSDS. Certifications
Key Ingredients
L-Ascorbic Acid or Stable Derivatives
Offers the stability/efficacy balance suited to the formulation for tone-evening and antioxidant effect.
Ferulic Acid / Vitamin E (optional support)
Strengthens Vitamin C's stability and antioxidant effect.
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How to Use
- 1Applied to cleansed skin at the serum step, after toner, preferably in the morning routine.
- 2A few drops are worked into the face and neck, followed by moisturizer and sunscreen.
- 3If used in the same routine as retinol, separating them (Vitamin C AM / retinol PM) is recommended.
- 4Using it within 3-6 months of opening is recommended to preserve the formula's effectiveness.
Frequently Asked Questions
Is the serum still usable if its color darkens over time?
Mild color change is a sign of natural oxidation; clients should be told that noticeable darkening and scent change may indicate reduced effectiveness. Our packaging and form choices are aimed at delaying this process as much as possible.
Which Vitamin C form do you recommend?
L-ascorbic acid has the strongest clinical evidence but lower stability; derivatives like sodium ascorbyl phosphate are more stable and better tolerated on sensitive skin. We can recommend based on your brand strategy.
Why does packaging choice matter so much?
Vitamin C degrades quickly on light and air exposure; light-blocking amber bottles or airless pumps directly contribute to preserving the formula's effectiveness throughout its shelf life.
What documentation is provided with the product?
We deliver a cosmetic product safety report (CPSR), stability test reports, and required notification documents along with production.
