SAFE ON ALL: Glass, Plastic, Metal, Ceramic, Porcelain, Silicone & more!!! Specially formulated to easily remove and dissolve tar and resin and stains from any bong, pipe, dab, vape and more. The foam creates a thick suds and bubbles active cleansing solvent that safely eats away at tough, hard to reach areas of any device you are cleaning. No harsh chemicals - No ammonia, acid or alcohol. Contains natural plant based cleaning agents and is NON-flammable.