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Scientists are testing whether anti-retroviral lubricants or gels can be applied to aid in the prevention of transmission of HIV. Breathing on these types of lubricants may increase the effect. Real Porn category: amateur , hardcore , indian , cheating. Porn Video Hot 6. A later study has validated the findings of the Population Council for some water-based products' hyper-osmolality causing some human's cells damage, and better bio-compatibility with low-osmolality water-based products and silicone-based products but failed to corroborate polyquaternium 15 having a role that binds HIV to rectal cells or increase HIV replication. During fertility interventions, the use of a lubricant eases sperm specimen collection by masturbation.

Not all silicone-based lubricants are certified latex-safe, but silicone-based lubricants have not been shown to increase the risk of HIV transmission during anal intercourse , as some water-based lubes have. Outline of human sexuality. Jizz Porn Personal lubricants are particularly useful for intercourse when a partner experiences dryness or excessive contraction tightness of the vagina or anus.