Bio-cellulose offers the tightest skin contact and highest essence retention, making it ideal for premium peptide delivery — it also commands a higher retail price point. Hydrogel is visually impressive and has strong consumer appeal but can be less breathable. Microfiber is the most cost-effective and widely available at low MOQs. For a peptide-focused product where bioavailability is the selling point, most cosmetic chemists recommend bio-cellulose or hydrogel substrates.
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