
COSRX
5 PDRN Collagen Intense Vitalizing Serum100 ml
Mild. Collagen: ingredient no. 17, not counting water.from€19.45
€19.45 / 100 ml

LykoCheapest
Updated 2026-09-12
€34.50€31.10
€62.20 / 100 ml
Cocopanda
Updated 2026-09-12
€31.40
€62.80 / 100 ml
Prices come from Finnish online stores and are shown in euros. Cocopanda delivers only within mainland Finland; Lyko's delivery terms also list Sweden, Norway, Denmark, Poland, the Netherlands, Austria, and Germany. Neither delivers to the US or the UK.
Isntree TW-Real Bifida Ampoule is a serum (50 ml). The product is Korean. The ingredient list has 29 ingredients, including fermented ingredients, niacinamide, and hyaluronic acid. The product is silicone-free and sulfate-free. The product contains no drying alcohol. We compare prices at 2 retailers; the cheapest right now is €31.10.
Source: store product page · Updated 2026-09-12
Contains one flagged ingredient group. Key ingredient: Niacinamide.
The product contains essential oils or plant extracts that naturally carry them.
A form of vitamin B3. Studied in relation to perceived oiliness and evenness of tone.
A humectant that binds water.
A humectant often used in formulations for sensitive skin.
Short amino-acid chains used in conditioning formulations.
Building blocks of protein, and part of the skin's own natural moisturizing factor. In a formula they act as humectants; some also serve as pH adjusters.
Bifida Ferment Lysate: ingredient no. 1, not counting water
Ingredients fermented with microorganisms: yeast, lactic acid bacteria, and bifido filtrates. Common in Korean and Japanese essences, where they act as humectants.
A large protein that stays on the skin surface as a hydrating film former; hydrolyzed forms and collagen amino acids act as humectants. The ingredient is often used in formulations aimed at aging skin.
Potent or Mild tells you how high the ingredient named on the product sits in its ingredient list. How the mark is set
Confidence: medium · v2026.09.3
This assessment is read from the ingredient list and is not medical advice. It makes no promise about acne. Individual skin reactions vary.
Read how we classify productsThe order is the manufacturer's own and follows concentration down to the one percent mark. Underlined names are flagged by our criteria. Names with a dotted underline open a short note on what the ingredient does in the formula.

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