Video link: https://files.catbox.moe/ws5l91.mp4
Oil-based lubricants can cause damage to silicone, creating micro-tears that can harbor bacteria. So for those needy, newly-changed horse ladies out there, with...particularly large needs, who may have difficulty finding anyone equipped to meet those needs...stick to water-based! Or natural, if you're particularly productive. Almost nobody is THAT productive, though...