"Human lubricant manufacturers" application in human sexuality also has a very long history, but the early people using plant oils such as olive oil. However, due to limited ingredients not ideal, easily contaminated clothes, is not easily absorbed by the body; then people try to use Vaseline, baby oil, shower gel, massage oil, petroleum-based mineral oil-based substances as "Human lubricant manufacturers"; These substances are often sticky too large, easy to clean, easy to cause the residue after use, even after use is likely to be blocked by both men and women the urethra, resulting in difficulty urinating pain, and it will destroy the condom stable, resulting in unwanted pregnancies, "Human lubricant manufacturers" say these will cause damage to the human body.