What Can Be Used As a Personal Lubricant? Vaseline as a sexual lubricant: Is it safe to use? 5 Reasons to Avoid Vaseline as Lube (+ What To Do Instead) Coconu Amazon.com: Sasmar Vanilla Flavored Lubricant Water Based Personal Lube for Men, Women Feels Natural, Long Lasting Formula, Paraben Free, Toy Friendly and Condom Safe, Oral Lubricant for Couples 60 ml : What is lube? Personal lubricant is used during sexual activity to decrease friction but it comes in several formulations. The primary benefits of using lube include: It improves condom barrier safety by preventing NO! Only use water based lubes designed for sex. Oil based ones (such as Vaseline, massage oils or hand cream) may weaken or break the condom.