China Brush

Its graphic box is the first thing you see, but the product itself is a liquid with no motor, no power source, and no moving parts. The whole package is 3 inches long, 1 inch in diameter, and 1 inch tall, and it weighs 0.03 pounds.

A Water and Glycol Base, Not Silicone

Going by its ingredient list, the formula is built on water and propylene glycol rather than silicone. Propylene glycol is a humectant, so it helps the liquid stay moist and spread thinly. The product is labeled as an oil, but its base reads as a thin, water-dispersed liquid, so expect something lighter than a heavy massage oil.

The formula is powerless and not water resistant. It carries a 1 year warranty.

Benzocaine, Acetone and Where They Go

Benzocaine is the active desensitizer here. Its listed function is numbing, which means it lowers sensitivity on the skin where it is applied. The oak moss is an herbal component, and water serves as the carrier for the herbal extract.

Acetone is the ingredient to plan around. It works as a solvent to help the mixture spread, but it is strong enough to break down latex. Keep this liquid away from latex condoms and latex toys. Because the product lists no compatibility details for silicone or other materials, check any toy surface before it touches the product.

Since the formula is a thin liquid with a solvent in it, a small amount goes further than a generous pour would. Measured at 3 inches long and 1 inch across, with a 1 inch height, the package is small enough to hold in one hand.