Sliquid Naturals Sizzle is a water based personal lubricant, and is Sliquid's stimulating formula. Naturals Sizzle is made especially for those who are looking for a little extra sensation from a personal lubricant. Formulated with food grade menthol, Sizzle has the effect of being both warming and cooling at the same time, while maintaing its glycerin and paraben free female friendly status. Sizzle goes on cool, and warms with friction. All Sliquid products are formulated by sensitive women, for sensible women, and will never cause yeast infections or UTI's.