Which Collagen Type Should You Look for in a Face Serum?
Types I, II, III, and recombinant — what each does and which matters most for skin
The direct answer
For skin firmness, post-procedure recovery, and anti-ageing: Type I — the primary structural collagen of the dermis. And for topical application: recombinant Type I specifically.
REVAGI The Recombinant Serum uses SCIRA™ recombinant human Type I collagen — bioengineered to match the collagen your own fibroblasts produce.
The Main Collagen Types in Skin
| Type | Location in skin | Function | Relevance for serums |
|---|---|---|---|
| Type I | Dermis — primary collagen | Tensile strength, firmness, structural scaffolding | Highest — the primary target for anti-ageing and post-procedure |
| Type III | Dermis — early wound repair | Flexible scaffold; appears first in wound healing; later replaced by Type I | Significant — important in post-procedure repair phase |
| Type IV | Basement membrane | Barrier structure between epidermis and dermis | Lower — not typically the target of topical serums |
| Type II | Cartilage | Joint structure | Not relevant to skin serums — often found in oral supplements for joints |
Shoulders MD, Raines RT. Annu Rev Biochem. 2009. — Collagen structure and biological roles.
Why Source Matters as Much as Type
Most collagen serums list "collagen" without specifying type or source. When evaluating a product, both matter:
- Animal-derived Type I (bovine, marine, porcine) — structurally similar to human Type I but not identical. Risk of immunogenic reaction. Variable purity.
- Hydrolysed Type I — animal-derived, enzymatically fragmented. Small enough to penetrate skin; hydrates and stimulates via peptide signalling. But structurally incomplete — cannot form biomimetic layer.
- Recombinant Type I — bioengineered from human gene sequences. Structurally identical to human Type I collagen. No immunogenic risk. Full structural integrity. Can form biomimetic surface layer and provide structural signalling to fibroblasts.
Full comparison: recombinant vs traditional collagen.
For Post-Procedure Recovery
After CO2 laser, RF microneedling, or pico laser, the skin's own fibroblasts are producing both Type I and Type III collagen during the repair and remodelling phases. Recombinant Type I collagen applied topically provides a structural signal that helps guide this synthesis toward organised, quality formation. See: the role of collagen in post-procedure recovery.
Post-procedure skincare
REVAGI The Recombinant Serum
SCIRA™ recombinant human Type I collagen · REPS™ penetration · licensed clinics
No retinoids · No AHAs/BHAs · No fragrance · Cosmetic serum
See also: what recombinant collagen is and why it matters and the complete collagen serum Singapore guide.
Liu TS et al., Regen Biomater. 2024.