The need for lubricant during intimate contact is common and occurs for a number of reasons. Dehydration, use of antihistamines, antidepressants or other medications that lead to vaginal dryness, which in turn is a prerequisite for painful sex. Because natural lubrication is an important element of arousal, its absence can significantly reduce libido. There are many products on the market, some of which are extremely unsuitable for use: those based on petroleum-based chemicals. The most common lubricants include compounds such as propylene glycol – used in antifreeze and brake fluids for cars, and polyethylene glycol – used as a laxative and in stove cleaners. These chemicals are preserved longer with the help of methyl- and ethylparabens – preservatives pointed out by many as carcinogenic. The problem with them is that they damage the genital tissue they are designed to protect. This is not due to allergy or hypersensitivity, but is rooted in purely biophysical incompatibility. Human skin cells weigh an average of about 300 isomoles, while the molar weight of petroleum derivatives in lubricants is tens of times higher. These hyperosmotic preparations literally crush the cells they come into contact with. The warming sensation when using a petroleum-based lubricant is due to the fact that the epidermal cells shrink and entire surface layers of them are torn off and shed. This causes microscopic tears in the skin covering and predisposes to infection. NEWS_MORE_BOX Women using petroleum-based products have a 13-fold increased risk of bacterial vaginitis! Between 29% and 51% of women in Europe suffer from this condition, but over 80% of them don’t even know they have it or what caused it. Another common side effect of petroleum-based products is that they break down latex condoms. This renders their use meaningless as a safe form of contraception and protection. To avoid such problems, the solution is to use water-based lubricants.