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99% PRO-Xylane Powder CAS 439685-79-7 Cosmetic Grade Raw Material. High Purity Standard: Available in 10% and 99% purity specifications with CAS 439685-79-7 standard identification. Premium Cosmetic Ingredient: High-quality pro-xylane raw material for premium anti-aging and skin firming beauty product formulation. Multi-Benefit Skincare: Supports skin elasticity, promotes collagen synthesis and helps improve overall skin texture and tone.