A personal lubricant can be applied to the vaginal opening, the penis, or both, to augment the naturally produced lubrication and prevent or reduce the discomfort or pain. More rarely, a vaginal suppository may be inserted prior to intercourse. Oil-based lubricants can weaken latex and reduce the effectiveness of condoms, latex gloves, or dental dams as either forms of birth control or for protection from sexually transmitted diseases, so water- or silicone-based lubricants are often used instead. The use of an artificial lubricant can make sexual intercourse less painful for a woman, but does not address the underlying cause of the vaginal dryness itself. Both canola oil and mineral oil are recommended by the American Society for Reproductive Medicine as fertility-preserving types of personal lubricant. Dry sex
Some people practice dry sex, which involves the removal of vaginal lubrication in some way. The rationale for the practice seems to be for cleansing purposes and to enhance the sexual pleasure of the penetrating partner. However, besides making sexual intercourse painful for the female, the practice is believed to increase the risk of transmitting sexually transmitted diseases for both partners, such as HIV, whose risk of transmission is increased by lacerations in the vaginal tissue resulting from the lack of lubrication. See also
References
External links

Mayo Clinic - Vaginal dryness
Eiken syndrome is a rare autosomal bone dysplasia with a skeletal phenotype which has been described in a unique consanguineous family, where it segregates as a recessive trait. References
Further reading
Duchatelet, Sabine; Ostergaard, Elsebet; Cortes, Dina; Lemainque, Arnaud; Julier, Cécile (2005). "Recessive mutations in PTHR1 cause contrasting skeletal dysplasias in Eiken and Blomstrand syndromes". Human Molecular Genetics. Oxford Journals. 14 (1): 1–5. doi:10.1093/hmg/ddi001. PMID 15525660. Eiken M, Prag J, Petersen K, Kaufmann H: - A new familial skeletal dysplasia with severely retarded ossification and abnormal modeling of bones especially of the epiphyses, the hands, and feet. Eur J Pediatr 1984, 141:231-235. == External links ==