Vitamin C 15% Brightening Serum
Antioxidant brightening is the highest-margin serum category in Western skincare — we manufacture three stabilized systems.
MOQ from 1,000 pcs (stock formula) · GMPC + ISO 22716 · US FDA registered
Vitamin C remains the highest-searched antioxidant ingredient in US and European skincare, and it is also the category where manufacturing quality is most visible to consumers. An unstable or improperly packaged vitamin C serum oxidizes within weeks, turns amber on the shelf, and generates returns. That is why we treat vitamin C as a specialty line: inert-gas filling, oxygen-barrier packaging options, and three distinct vitamin C systems matched to different positioning and price points.
Whether your brand wants the classic low-pH L-ascorbic acid experience, the gentler and more stable ethyl ascorbic acid, or a sensitive-skin SAP base, we manufacture it as a stock private-label formula or a fully custom ODM build, with assay verification on every batch so you can prove potency to your customers.
Water or water-glycol serum · 30 ml amber glass dropper or airless pump · system-dependent pH
Key Actives & Typical Concentrations
All INCI names and concentration ranges below reflect publicly documented formulation practice for this category. Every value is adjustable in your custom build — see the customization section.
| Ingredient (INCI) | Typical Level | Function & Benefit |
|---|---|---|
| 3-O-Ethyl Ascorbic Acid | 15% (10% optional) | Stable vitamin C derivative; brightening, tone evenness, antioxidant protection |
| L-Ascorbic Acid + Ferulic Acid + Tocopherol | 10–20% / 0.5% / 1% | Classic antioxidant trio at low pH for maximum potency positioning |
| Sodium Ascorbyl Phosphate (SAP) | 3–5% | Gentle, very stable option for sensitive skin and pharmacy channels |
| Ferulic Acid | 0.5% optional | Boosts photostability and antioxidant network in derivative systems |
| Sodium Hyaluronate + Glycerin | 0.2% / 3% | Hydrating cushion that offsets the light acidity of active systems |
How We Engineer This Formula
Three systems, three price positions
Ethyl ascorbic acid at 15% is the current retail standard for mid-premium brightening serums: stable, effective, and comfortable. Pure L-ascorbic acid with ferulic and vitamin E delivers the classic dermatologist story but demands low pH, air-restricted packaging and careful logistics. SAP is the value-tier workhorse. We help you pick the system that matches your price, channel and market — then engineer the full formula around it.
Oxidation is a packaging problem, not just a formula problem
We pair each system with the right component: amber or opaque glass for ascorbic acid, airless pumps for derivative systems, and optional inert-gas flush during filling. Opaque cartons and induction seals complete the protection chain. This is the difference between a serum that stays champagne-clear for 12 months and one that browns on the shelf.
Claims that survive regulation
Brightening claims are regulated differently across markets. Our claims sheet maps what you can say in the US (MoCRA context), the EU (CPNP cosmetic claims regulation), the UK and the Gulf — including where 'brightens' is safe and where you must avoid drug-like language. Assay certificates back every potency claim you print.
Manufactured In-House, Documented Per Batch
Every vitamin C batch is assay-verified and packed under inert conditions to protect potency.
Our factory (Guangdong Kuaiying Biotechnology, license 粤妆20250206) runs GMPC and ISO 22716-certified lines with batch traceability from raw material to carton. Every production order ships with certificate of analysis, stability summary, microbiology report and MoCRA/CPNP-ready documentation.
Customization Options for Your Brand
- System choice: ethyl ascorbic acid 10–15%, L-AA + ferulic + E, or SAP 3–5%
- Add-ons: niacinamide (for a C + B3 duo), ferulic, hyaluronic acid, glutathione, arbutin
- Texture: watery, silky slip-agent base, or light emulsion for dry climates
- Packaging: amber glass dropper, airless pump, frosted glass, custom color and printing
- Fragrance-free standard; citrus-fragranced version available for mass positioning
- Full docs: assay, stability, PET, CPNP/MoCRA support, free-sale certificates
MOQ & Ordering Tiers
| Order Route | Details |
|---|---|
| Stock formula (15% EAC base) | 1,000 pcs / SKU · ready to fill · production in 10–15 days |
| Adjusted stock (L-AA/ferulic system) | 1,000 pcs / SKU · requires airless or amber packaging |
| Full custom ODM | 1,000 pcs / SKU · production in 10–15 days incl. stability on new system |
| Sampling | 3–5 samples, 5–7 days, cost credited against first order |
Payment terms: 30–50% deposit, balance before shipment. Full quotation within 24 hours of your brief.
MOQ and lead time above are the standard liquid, cream and gel route. The real minimum is set by the manufacturing system rather than the category: surfactant systems (shampoo, body wash) start at 2,000 pcs, stick formats at 3,000, and powders and sheet masks at 5,000 — with longer production runs to match.
Frequently Asked Questions
Which vitamin C derivative should my brand use?
It depends on your positioning. 15% ethyl ascorbic acid is the current retail standard — stable, effective, comfortable, mid-premium price. Pure L-ascorbic acid with ferulic acid suits dermatologist-style premium brands but needs strict packaging and faster stock turns. SAP at 3–5% fits sensitive-skin and value lines. Send us your price point and market and we will recommend the system with sample costs.
How do you prevent the serum from oxidizing in transit?
Three layers: formula (chelators, pH control, antioxidant network), filling (inert-gas flush option, induction seals), and packaging (amber/opaque glass or airless pumps, opaque cartons). We also run 3-month accelerated stability and provide the report so you can see color and potency retention before you commit.
What is the MOQ and lead time for a custom vitamin C serum?
Stock-base and fully custom ODM orders both start at 1,000 pcs with your labels. Sampling takes 7 days and production runs 10–15 days after approval, with two revision rounds included.
Can you add niacinamide to make a C + B3 combination serum?
Yes. Vitamin C and niacinamide pair well in modern, properly buffered formulas — this combination is one of our most requested custom builds. We validate the pH window and run compatibility and stability testing before scaling.
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Further Reading
Stability, assay and safety testing explained.
Packaging systems that protect actives and sell on shelf.
Buyer guides for this build
Before you brief a supplier on this category, these are the guides that answer the questions buyers ask next — timelines, order quantities, cost structure and compliance.
Launch This Formula Under Your Brand
Send your target market, quantity and packaging preferences — our team replies with a full quotation and sample plan within 24 hours.