Leave-in conditioners offer several benefits to users, depending on the formula used. The first benefit of these products is their lightweight composition which doesn't weight down on your hair. Leave-in conditioners can add volume to your hair, especially if you have curly or afro hair. These products are perfect for those who travel or use the gym frequently, as they help to vamp up your hair after a change in location or a hectic workout. Conditioners are also known to help reduce breakage, which will add length to your hair.