Water Soluble. Gentle Heating Sensation. Use on the Nipples and Erogenous Zones Too.Turn up the heat! Gently heats on contact and warms with motion... Blow on it, it gets warmer.  Wet® Warming™ is silky smooth, long lasting, water soluble, harmless if ingested, and latex safe.  Lick it and feel the heat between your sheets!  Not recommended for those with sensitive skin.  Now kosher!