Impulse' Conductive Gel is glycerin-free. body safe gel meant to increase conductivity and enhance electro-stim sensation. Amplify sensation and take e-stimulation to the next level with this body-safe colloidal silver conductivity gel. Keep you electro-stim toys in tip-top condition. while getting the most of out each pulse with this silicone-friendly conductive gel. Our US made product is cruelty free and never tested on animals. Glycerin free. Paraben free. salt-free and dye-free.