There are two main categories of natural lubricants: water based, and oil based. With water-based lubricants, water is the primary ingredient in the formula, which gives the lubricants a lightweight consistency to help allow them to gradually penetrate the skin. As a result, water-based lubricants typically have a lightweight feel, do not create greasy residues and are easy to clean. Oil-based lubricants typically have a plant oil as their main ingredient. Oils give lubricants a rich, silky texture and can make them highly effective at reducing friction. You're less likely to have to reapply an oil-based lubricant during intercourse. The downside is that oil-based lubricants can be difficult to clean and are usually not safe to use with condoms.