The ingredient PDRN should be familiar to anyone who follows the skincare community. Simply put, it's a DNA fragment extracted from salmon sperm, scientifically known as polydeoxyribonucleotide, with a solid research foundation in repair and regeneration.
While recently checking the National Medical Products Administration filing system, I noticed that the Shitaqi brand under Guangzhou Weipei Biotechnology has filed a "DNA Sodium Collagen Rejuvenating Firming Hydrating Serum," with filing number 粤G妆网备字2025378735.
The formula lists two core ingredients: fibronectin + DNA sodium, with the PDRN concentration marked at 2%. It's positioned as a clinic-grade repair serum, targeting firming, wrinkle reduction, and repair & hydration.
Frankly speaking, a 2% concentration is on the high end among domestic brands. Most PDRN products on the market range between 0.5% and 1%. Going up to 2% means either they have confidence in their raw material supply, or they've thoroughly validated formula stability.
By the way, let me mention Guangzhou Weipei as a company. It has four proprietary brands:
- Shitaqi — Clinic-grade skincare positioning, specializing in problem-skin repair
- Shiweilandai — An established brand from 2012, professional-grade repair
- Beifuyinzi — Founded in 2014, pursuing a high-end medical aesthetics route
- Yiweilan — Founded in 2017, gene-based beauty repair
The production license number is 粤妆20160036, and the factory is located in Baiyun District, Guangzhou.
Looking at the filing pace, Guangzhou Weipei's product direction for 2025 is very clear — bioactive peptides + recombinant collagen, plus the PDRN line. These three directions happen to be the hottest raw material trends in the functional skincare track right now.
Lyophilized powder is their largest production category, with a daily output of 1 million pairs. Anyone in cosmetics OEM should know that lyophilized powder requires high standards for freeze-drying curves and sterile filling, and not many manufacturers can reach this production scale.
