Powertex is an environmentally friendly, water-based textile hardener which can harden absorbent materials such as textiles, fabric, cloth, paper, cardboard, fabrics, leather and fiberglass. Powertex can be easily combined with self-hardening clays, concrete, stone, ceramic, wood, sand, Stone Art and Easy 3Dflex. Powertex is a Universal Art material, used for fiber art, sculptures ion air dry clay (Paper Mache), Mixed Media paintings, decorative objects and jewelry. FYI : Since Powertex is a liquid we can NOT accept returns.