Glossary of Terms

HFO stands for Hands Free Orgasm. This is an orgasm induced without any manual manipulation, usually as a result of an e-stim or electrostimulation session using an electrode together with an e-stim control box.

A hydrophobic material is one that does not have an affinity for water. So when using this term for sex toy materials it means that the material will not absorb water. A material with no water in it is not a good breeding ground for bacteria or mold.

Hydroxyethyl cellulose, also known by the trade name Natrosol, is a gelling and thickening agent derived from cellulose. It is widely used in cosmetics, cleaning solutions, and other household products.

A thickener which is an ether of propylene glycol. It is considered to have a very low level of toxicity and should not pose any risk. It is also found in many make-up and haircare products.

Designed to reduce or minimize the possibility of an allergic response, as by containing relatively few or no potentially irritating substances