During sexual arousal, a woman's vagina usually secretes natural lubrication, making it more wet and ready for sex. Many women think that lubricant makes sex comfortable and pleasant, reduces friction and irritation. Lubricant (lat. lubrico is to make smooth, slippery) is a material that facilitates friction and improve the glide. The word grease is a much broader concept, but value too.

From time to time any woman experiencing vaginal dryness. When not enough lubrication, dryness leads to pain and discomfort. This can occur when estrogen levels fall during menopause. Vaginal dryness can also happen when a woman got stress, pregnant, breastfeeding, undergoing chemotherapy, etc. In this case, a lubricant can help replace the missing lubrication, act as a moisturizer and to relieve the symptoms of dryness. 

Sometimes women just prefer more lubrication than they provides their body. In these circumstances, the lubricant can help. The lubricant is a liquid or gel that can be applied to women and their partners during sex to make the vagina or anus more humid. Lubricant is required in the case when a couple uses condoms and sex toys to reduce friction. 

Lubrication protects the mucous membrane from the appearance of cracks and irritation, through which can penetrate the infection, relieves pain and increases comfort. 

There are 3 types of lubricants, each of which has its advantages and disadvantages.

Lubricant, water based, usually is not expensive. Thanks to its light, water-based, the best way to mimic natural vaginal lubrication. Perfect for use with condoms and sex toys. Lubricant suitable for vaginal and anal sex, ideal as a moisturizer. Maybe in the process of sexual intercourse to dry, so usually need to use it in greater numbers. Unscrupulous manufacturers often in the lubricant composition include glycerin which can cause yeast infection. To avoid such risks is to avoid lubricant containing glycerine.

The silicone based lubricant is more expensive than water-based lubricant. Has a longer sliding effect. However, such lubrication requires a thorough washing immediately after sexual intercourse, otherwise it can irritate. Cannot be used with silicone toys. Lubricant silicone based, may also be composed of glycerin. Look for no glycerin lubricant.

Lubrication oil-based has a long glide effect. Perfect for clitoral stimulation, erotic massage and does not require rinsing. Perfectly suited for anal sex as a natural herbal alternative to silicone grease. Such a grease cannot be used with condoms (the oil can destroy latex). Not to be confused with the lubricant oil from lubricants, petroleum-based (mineral oil, vaseline, etc.). The last can cause irritation and inflammation.

The choice of lubricant, of course, a purely personal decision, and couples can try different products and see what suits them more.