SEX LUBRICANT
 
All lubes are not created equal though. Water-based lubes are a favorite
 since they play well with condoms and clean up easily. Using oil-based 
lubricants such as petroleum jelly, vegetable oil, or baby oil with 
latex condoms is a no-no. Oil damages latex, making condoms more 
permeable to STIs and more likely to break.Using condoms properly is the most effective way to protect against STIs, but getting wetter certainly makes it better.