Women who shave their vaginas thinking it is more hygienic are actually 
putting themselves at greater risk of infection, according to experts.
Not only does the hair stop viruses and bacteria reaching genitalia, it 
also acts as a cushion for the sensitive labia and vagina.
Dr Vanessa Mackay, from the Royal College of Obstetricians and Gynaecologists, told The Independent : 
"Pubic hair offers a natural barrier to keep things 
clean, to decrease contact with viruses and bacteria, and to protect the
 tender skin of the area.
"While protecting against diseases and skin problems, pubic hair 
prevents foreign particles like dust and pathogenic bacteria from 
entering the body.Pubic hair also helps to control the moisture of the 
area which decreases the chances of yeast infections."
The study by JAMA Dermatology also found that women not only groom for 
'social events' but also break out the razor when visiting a health care
 professional because they are "self-conscious about their appearance 
even in nonsocial settings".
The most common reasons for grooming were hygiene (59% of women 
sureyed), because they believe it makes their genitals more attractive 
(31.5%), and because their partner prefers it (21.1%).
Why Ladies Shouldn't Shave Their Pubic Hair - Health Experts