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Lubrication is the process, or technique employed to reduce wear of one or both surfaces in close proximity, and moving relative to each other, by interposing a substance called Lubricants between the surfaces to carry or to help carry the load between the opposing surfaces.
vaginal lubricants are used to reduce vaginal dryness and pain during intercourse and by couples trying to conceive during fertility interventions the use of a lubricant eases sperm specimen collection by masturbation commonly used lubricants include saliva oil such as baby oil olive oil canola oil or mineral oil or commercially available lubricants that are either water based or hydroxyethylcellulose based human saliva and olive oil have been found to be detrimental to sperm function