Freeze-drying preserves active ingredients at their peak potency — no preservatives, no degradation. Discover how lyophilization works, why it commands premium pricing, and how SEYE manufactures freeze-dried skincare at scale.
What Is Lyophilization?
Lyophilization (freeze-drying) is a dehydration process that removes water from a product while it is frozen, using a vacuum to convert ice directly to vapor (sublimation). The result is a dry, porous powder that retains the full biological activity of the original formula.
In cosmetics, lyophilization is used to preserve:
- Growth factors (EGF, FGF, TGF-β)
- Peptides (Argireline, Matrixyl)
- Probiotics and fermented extracts
- Vitamin C (L-ascorbic acid) at high concentrations
- Collagen and elastin hydrolysates
Why Freeze-Drying Matters for Skincare
The Problem with Conventional Formulas
Most skincare actives degrade rapidly in water-based formulas:
- Vitamin C oxidizes within weeks
- Growth factors denature at room temperature
- Probiotics lose viability without refrigeration
Conventional solutions — adding preservatives, antioxidants, or refrigeration — compromise efficacy or consumer experience.
The Lyophilized Solution
| Property | Conventional Formula | Lyophilized Formula |
|---|---|---|
| Shelf Life | 12–24 months | 24–36 months |
| Active Stability | Degrades over time | Preserved at peak potency |
| Preservatives | Required | Not needed |
| Vitamin C Concentration | Max 15–20% | Up to 40% |
| Consumer Perception | Standard | Premium / medical-grade |
SEYE's Lyophilization Process
Step 1: Formula Development
Our R&D team formulates the active concentrate at optimal pH and ionic strength for the target actives.
Step 2: Pre-Freezing
The liquid formula is filled into vials and frozen at -40°C to -80°C to form a uniform ice crystal structure.
Step 3: Primary Drying (Sublimation)
Under vacuum (0.1–0.3 mbar), the frozen water sublimes directly to vapor, removing ~95% of water content.
Step 4: Secondary Drying (Desorption)
Temperature is raised to remove bound water, achieving final moisture content of <1%.
Step 5: Sealing & Packaging
Vials are sealed under nitrogen atmosphere to prevent oxidation. The lyophilized cake is stable at room temperature.
Activation at Point of Use
The consumer activates the formula by:
- Breaking the ampoule seal
- Adding the included solvent (saline, hyaluronic acid solution, or water)
- Shaking to dissolve
- Applying immediately
This just-in-time activation ensures the consumer receives actives at 100% potency — something no pre-mixed formula can match.
SEYE's Lyophilized Product Portfolio
| Product | Key Actives | Target Concern |
|---|---|---|
| EGF Lyophilized Ampoule | EGF 50ppm + Collagen | Anti-aging, repair |
| Vitamin C Brightening Ampoule | L-AA 30% + Ferulic Acid | Brightening, antioxidant |
| Probiotic Repair Ampoule | Lactobacillus Ferment + β-Glucan | Barrier repair, sensitivity |
| Collagen Intensive Ampoule | Marine Collagen + Peptides | Firming, plumping |
MOQ & Lead Time
- MOQ: 3,000 sets (vial + solvent + packaging)
- Lead time: 45–60 days (including stability testing)
- Certifications: ISO 22716, GMPC, EU Cosmetics Regulation compliant
SEYE R&D Team
Biotechnology Lead
Part of SEYE's expert team with deep expertise in cosmetic formulation, OEM manufacturing, and global regulatory compliance.
