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PBSerum is a line of advanced, enzyme-based cosmetic and medical-aesthetic products developed by Spanish biotechnology company Proteos Biotech. They are known for utilizing recombinant enzymes (lipase, collagenase, and lyase) in combination with hyaluronic acid to treat various skin conditions, cellulite, and localized fat without surgery. These products are designed for both professional, in-clinic use (often injected or used in microneedling) and home-care routines