This is one of the more common questions from people who come across both Larens' peptide cosmetics and Nutrivi's collagen supplements: since both are based on fish collagen peptides, is it the same technology at all? The answer is: a similar raw material, but two different routes of administration — and two different mechanisms of action.
Both Biopeptide Complex (Larens' cosmetic technology) and Collagen Booster (Nutrivi's supplement) originate from the same category of raw material — fish collagen hydrolysates. That's a meaningful similarity in origin, but it doesn't mean an identical formula. One is applied to the skin as a serum or spray, the other reaches the digestive tract as a capsule — and that fundamentally changes how a given peptide starts to act.
A peptide applied to the skin must cross the epidermal barrier to reach the living layers of skin and bind to receptors on the surface of fibroblasts. There, it performs a signalling function — "telling" the cell to increase collagen and elastin production.
A full description of this mechanism, along with the raw material's origin and how to read the INCI, is in the article: Bioactive marine peptides — what are they? →
Collagen taken orally enters the digestive tract, where digestive enzymes break it down into shorter peptides and individual amino acids. Only in this form can they be absorbed through the intestinal lining and enter the bloodstream — a completely different starting point than applying a cosmetic to the skin.
Details on collagen supplementation, including the composition of Nutrivi Collagen Booster, are covered in the article: Collagen peptides in dietary supplements →
Not in the sense of an identical formula. Biopeptide Complex is a proprietary, patented cosmetic technology (patents PL206813, US7285638) designed for topical application and crossing the epidermal barrier. Collagen Booster is a dietary supplement designed for digestion and intestinal absorption, enriched with vitamin C to support collagen synthesis from within. What connects them is the raw material category (fish collagen hydrolysate); what separates them is the form, concentration, and purpose of the formula.
| Feature | Peptides in a cosmetic | Peptides in a supplement |
|---|---|---|
| Route of administration | topical application (skin) | oral (digestive tract) |
| Barrier to cross | epidermal barrier | digestion and intestinal lining |
| Mechanism | fibroblast cellular signalling | delivering building blocks and cofactors (vit. C) for collagen synthesis |
| Example product | Biopeptide Serum Spray | Nutrivi Collagen Booster |
| Pace of effects | gradual, depends on regularity | gradual, depends on regularity and diet |
Neither route of administration is universally "better" — it's a matter of a different level of action, not a hierarchy of effectiveness.
Because a peptide cosmetic and a collagen supplement work at different levels and don't compete for the same mechanism, in practice they're often used in parallel — as complementary, rather than interchangeable, parts of a routine. The choice between them (or the decision to combine both) mostly depends on the individual goal: supporting the skin from the outside, from within, or both at once.
Content prepared: September 2026. Content requires periodic review in line with INCI, composition, and manufacturer material updates.