Are PDRN cosmetics and Rejuran treatments the same thing?
As more cosmetics containing “PDRN” have become available, many people expect them to have the same effects as dermatological treatments. Although the names are similar, the delivery methods and purposes are different.
Comparison
- Delivery method
- Dermatological treatment
- Applied to the skin's surface
- Purpose
- Dermatological treatment
- Moisturizing and managing skin condition
- Caution
- Dermatological treatment
- Claims about efficacy must stay within the scope of cosmetics
| Cosmetics | Dermatological treatment |
|---|---|
| Delivery method | Applied to the skin's surface |
| Purpose | Moisturizing and managing skin condition |
| Caution | Claims about efficacy must stay within the scope of cosmetics |
Names found in the full ingredient list of cosmetics
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The key point is that even if ingredient names are similar, the way they are delivered to the skin is different. PDRN refers to ingredients in the polydeoxyribonucleotide family, and in cosmetics it is often included as a moisturizing or conditioning ingredient. Topical products are applied to the skin’s surface; they do not deliver ingredients in the same way as injections.
Rejuran is often mentioned alongside PDRN, but more precisely, it is a medical treatment brand that uses PN (polynucleotide). Since it is injected into the skin, its concentration, formulation, delivery route, and purpose differ from those of cosmetics, and it is difficult to expect the treatment’s effects based only on a cosmetic product’s feel or ingredient list. It’s best to consult a dermatologist about whether to undergo the treatment, taking your skin condition and the possibility of side effects into account.
It’s more realistic to view cosmetics as a supplemental option for addressing dryness or improving how your skin feels. PDRN content and the way ingredients are listed can also vary by product, so check the full ingredient list and directions for use.
How can you tell PDRN and PN apart on an ingredient list?
It’s difficult to clearly distinguish PDRN from PN based on the ingredient list alone. Cosmetic ingredient lists usually show DNA-derived ingredients under names such as
Sodium DNA, but this name alone doesn’t tell you the ingredient’s molecular length or whether the product’s PDRN/PN distinction applies. The way a brand refers to it as PDRN or PN in its advertising may not correspond one-to-one with the ingredient list.So, in addition to checking the listed ingredient name, check the ingredient source and specifications in the product description. If they’re unclear, contacting the manufacturer is the surest option. It’s difficult to conclude from the ingredient name alone that it’s the same ingredient or has the same effects as injectable PN.