Water based lubricants are water soluble and are generally considered to be the type that is least likely to lead to skin irritation. Early water based lubes were cellulose based products but further developments has seen the addition of various agent to improve the Lubricants performance. These agents improve spreading properties and resistance to contamination.
One problem with earlier water based lubricants was their tendency to dry up during use, fortunately adding a small amount of water reactivates them. More advanced products contain dimethicone that prolongs the lubricating properties and reduces drying up. Water based lubricants are best for condoms. If you use oil based lubricants the condom can broke.
Please note that water based lubricants are not compatible with sex that occur in water, as such if you enjoy sex in the bath these products are not right for you.
