Sliquid Swirl Pink Lemonade (4.2oz) Naturals Swirl is a group of flavored water based lubricants, all glycerin and paraben free. All Swirl formulations start with our original Naturals H2O water based lubricant, and add flavoring and a hint of aspartame to sweeten. Pink Lemonade is subtle, and is intended to enhance your taste, not disguise. All Sliquid products are formulated by sensitive women, for sensible women, and will never cause yeast infections or UTI's.