emollient

[T]he effectiveness of an emollient is based on its ability to prevent water evaporation, […]

"Several of the visitors then partook for a short time, with evident Parisian gusto, of the pleasures of the dance," yes--we did, and the lovely girls with whom we polked (ladies being one of the Club emollients) were eloquent in praise of our exquisite tournures which were shown to such advantage beneath our tight uniforms.