Not everything is safe to use as a lubricant , What seems easy or available can actually harm your intimate health., Things you should NOT use as a lubricant:, Saliva can carry bacteria & Does Lube cause thrush or a BV Bed Intentions Best Lubes (And What You Should Avoid) The Vagina Whisperer Lubricants help reduce friction, making intimacy more comfortable and helping to prevent dryness and irritation when used correctly. However, some lubricants may cause skin sensitivity or damage condoms and sex toys if Vaseline as a sexual lubricant: Is it safe to use?