Since your natural wetness can decrease due to a variety of things (stress, medication and birth-control pills), adding lube helps ease penetration making sex & masturbation much more pleasurable and not painful. But using lubricant can be effective even when you don't have vaginal dryness. It adds sensation and also makes condoms more reliable. Warming Lubricants and Cooling Lubricants can add extra pleasure during sexual intercourse. These types of lubricants can also be used during foreplay to add some excitement and increase sexual arousal.