It is firmly in the conversation whenever long lasting lubricants are compared. There is no water in it to evaporate, so it does not dry out, it stays slippery underwater, and it holds FDA 510(k) clearance.

Silicone based, essentially always. Water based lube fades as its water evaporates. A silicone formula has no water to lose, so it keeps working from one application. It does need soap to wash off and it stains fabric.

Yes, and it is one of the main reasons to choose one. Silicone does not rinse away, so it stays effective in a shower, bath or hot tub. Take care, because it makes tubs and floors very slippery.

Soap and water. Plain water on its own will not remove silicone lubricant from skin.

Yes. Like all silicone lubricants it will stain fabrics, so use a towel if that matters to you.

Spot test first. Silicone lubricant can react with some silicone toys. Apply a small amount to the base or underside of the toy and check before full use. Glass, metal, ABS and stainless toys are fine.

Yes. It is latex friendly and compatible with both latex and polyisoprene condoms.

Upright, with the cap fully closed. If the cap is loose and the bottle is on its side it will leak, and silicone can stain or damage clothing and furniture.

Dimethicone, cyclopentasiloxane, cyclotetrasiloxane and dimethiconol.