A myth worth debunking: "collagen cream hydrates skin with collagen"
This is one of the most common myths in cosmetology. The collagen molecule (molecular weight 300,000–400,000 Da) is too large to pass through the epidermal barrier — it stays on the surface as a moisturizing film, and that's it. That's not useless (surface hydration has value), but it's not "delivering collagen to the skin". That kind of phrasing in advertising is a marketing oversimplification.
What actually works through the skin is peptides — short amino acid chains with a molecular weight below 10,000 Da, which penetrate the epidermis and dermis. That's why effective "collagen for skin" is a serum with collagen peptide fractions — not a cream with the word "collagen" on the packaging.
Molecules below approx. 500 Da penetrate freely. Collagen peptides at 500–5,000 Da penetrate with the help of water and carriers (liposomes). Whole collagen molecules (300,000+ Da) — don't penetrate. That's why a peptide serum > a collagen cream.
Two routes for delivering collagen — external and internal
| Route | How it works | WellU product | Effects |
|---|---|---|---|
| External — cosmeceutics | Signalling peptides penetrate the skin and stimulate fibroblasts to produce collagen and elastin | Biopeptide Serum Spray, Lifting Face Cream, BioRenew Mask | Improved hydration (2–4 wks), firmness and elasticity (8–12 wks) |
| Internal — supplements | Marine collagen peptides absorbed by the gut, transported via blood to fibroblasts in all tissues (skin, joints, hair) | Glowin'UP, Holistic Peptide Complex (Nutrivi) | Improved skin elasticity (4–8 wks), better hair and nail condition (8–12 wks) |
| Both together | Cumulative effect — two channels of fibroblast stimulation simultaneously | Larens + Nutrivi (the WellU philosophy) | Faster and more lasting effects than either approach alone |
Which collagen for facial skin should you choose?
When choosing an oral supplement (collagen "from within"), the key parameters are peptide molecular weight (below 5,000 Da — better absorption), the processing method (lyophilization preserves signalling peptides better than enzymatic hydrolysis), and the presence of vitamin C (essential for the body's collagen synthesis).
When choosing a topical cosmeceutic — look for a serum with low-molecular-weight peptide fractions, not creams with large "collagen" molecules on the label. Larens Biopeptide Serum Spray contains peptides from lumican, decorin and histone fractions — fractions that showed a 671% increase in skin collagen synthesis in studies.
Collagen for skin after 30, 40 and 50 — what changes with age?
After age 25, collagen synthesis declines by around 1–1.5% per year. After age 30, it's worth implementing a daily routine with topical peptides and considering supplementation. After age 40, the loss is significant — both approaches (topical + internal) are advisable. After age 50 (especially for women after menopause, when collagen loss accelerates to several percent per year), regular supplementation combined with cosmeceutics is the optimal way to slow visible changes.
Content based on WellU scientific materials and publicly available cosmetology literature. For informational and educational purposes.