When you need a little help with penetration or using a sex toy, add a lube to generate more pleasure.  There are different types of lubricants, but when you are using a silicone toy, we only recommend water based lubes.  Silicone lubricants degrade silicone products and after you have made an investment with sex toys made out of medical grade silicone, why would you want to ruin it?  Water based lubes can dry a little faster than silicone but they typically do not stain sheets too.  Avoid lubes that have paragons or glycerin if you are highly sensitive.  For those looking for anal pleasure with the use of a silicone toy, use a thicker/gel water based lube.