The viscosity of these products can be altered by adjusting their water content and concentration of cellulose or other gel-forming hydrophilic ingredient. Many different silicone lubricants are commercially available, with varying quality and performance. Some newer water-based lubricants are formulated with natural skin moisturizers, such as carrageenan , and may not leave a sticky residue after evaporation.
Additionally, a commonly used numbing agent benzocaine can cause an allergic reaction in those with an allergy to PABA 4-Aminobenzoic acid. 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. Some newer water-based lubricants are formulated with natural skin moisturizers, such as carrageenan , and may not leave a sticky residue after evaporation. Hand lotion is often used for recreational masturbation and popularly seen as an alternative to lubricants created specifically for sexual intercourse. Because of strict FDA guidelines for medical devices, organic personal lubricants were no longer allowed to carry a USDA seal for Nude Personal Lubricant, and that it should be very careful about using the term organic anywhere on its label. Other[ edit ] Other products that have been used as personal lubricants include vegetable shortening , which is durable and inexpensive but damaging to latex. In most cases, a warning is listed on the product label. Some lubricants are sold together, such as "hot and cold", or are marketed for a specific use or effect. Some contain botanicals such as aloe vera or plant extracts. Because water-based personal lubricants absorb into the skin and evaporate , most water-based lubricants have a tendency to dry out during use, but reapplication of the lubricant or application of water or saliva is usually sufficient to reactivate them. Silicone-based lubricant is also used in the manufacture of pre-lubricated condoms, due to its long-lasting properties and superior latex compatibility. Many men in Japan use lubricant created specifically for onaholes such as the Tenga Egg. Sexual activity[ edit ] A personal lubricant can be used to increase pleasure and reduce pain during sexual intercourse or other activities and may be used for lubricating the penis , vagina , anus , fleshlight or dildo or other sex toys before or during activity. The Population Council , in a study, tested commercially available water-based sexual lubricants, and found that many damaged human rectal cells and that some of them - those containing polyquaternium - appeared to actively increase HIV replication in cell cultures and therefore could raise one's risk of HIV transmission. They also cited silicone -based lubricants as a potential alternative, although they did not test any silicone lubes in their study. Many different silicone lubricants are commercially available, with varying quality and performance. Some lubricants are conveniently packaged for ease of application. Scientists are testing whether anti-retroviral lubricants or gels can be applied to aid in the prevention of transmission of HIV. When the lubricant eventually dries out, it may leave behind a residue derived from the other ingredients in the formulation. Water-based[ edit ] Water-based personal lubricants are water- soluble and are the most widely used personal lubricants. Often, this is simply a thicker gel rather than a liquid. This thicker consistency is preferable because it helps the lubricant stay in place. Personal lubricants are particularly useful for intercourse when a partner experiences dryness or excessive contraction tightness of the vagina or anus. Carrageenan has also been shown to be a potent inhibitor of human papillomavirus infection. 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.
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A Guide to Sexual Lubricants
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