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World Health Organization has revealed that nonoxynol-9 is an irritant and can produce tiny tears in mucous membranes, which may possibly raise the risk of transmission by providing pathogens a lot more effortless factors of entry into the method. They described that nonoxynol-9 lubricant do not have ample spermicide to raise contraceptive usefulness cautioned they ought to not be promoted. Polyurethane condoms can safely and securely be utilized with oil-primarily based lubricant. Non-latex condoms are available for people who are allergic to latex built out of polyurethane or polyisoprene. The palms and fore-arms of the females are tattooed with mitts as in the Marshall Islands. Medical gloves and finger cots designed out of latex, vinyl, nitrile, or polyurethane can deal with fingers or fingers all through guide intercourse or may possibly be employed as a makeshift dental dam during oral sexual intercourse. Mutual masturbation and guide sexual intercourse have some STI risk, specifically if there is pores and skin contact or shared bodily fluids with sexual partners, although the threats are considerably lessen than lots of other sexual functions.