Vaginal lubrication
The tissues of vagina is naturally moist. Fluid secreted from the cervix and also the secretions from the Bartholin glands (two pea sized glands at the base of the vagina) are responsible for keeping the vagina lubricated. During the period of arousal, the Bartholin glands secrete necessary fluid for reducing the friction. Occasional vaginal dryness is commonly observed, but when it is common, it can be either a symptom of menopause or a medical issue, like vaginal atrophy. People who daily complaint of vaginal dryness should consult with a healthcare professional.
With the increase in age, the tissue of vagina becomes thin. After or during menopause, the body is likely to produces less estrogen, leading to lesser moisturizing secretions resulting in vaginal dryness. With the thinning of vaginal tissue, the individual might experience the need of artificial lubricant during their sexual activity to enhance the experience of pleasure.