I am of 20 years old.my hairs are falling continuously from 2 years and my hairs become so thin.and they are n?

Could be medication, stress etc best off see a doctor

Since you did not say wether you are male or female I have included both:

Thinning

Normally you will lose up to 100 hairs a day. Every 30 days or so you will lose more due to replacement. A new follicle is pushing and old one out. 

The most common reasons for hair loss is stress, medication, or illness. 

If you think your hair loss is excessive you should see a physician to have to test run to make sure it is not due to the latter.

There is not a shampoo or conditioner that promotes hair growth unless is it prescribed by a physician and contains either "Rogaine", "Minoxidil", or “Propecia”. The only draw back to using these products is you have to use them for the rest of your life. If you stop you will lose what the product has grown in.

Male pattern Baldness

The gene for male pattern baldness comes through the mothers side of the family; therefore it is your uncles on your mothers side you must look to. Keep in mind the gene will skip a generation every know and then. If male pattern baldness has progressed to the point of being smooth bald the only recourse you have transplantation.

The most common reasons for hair is stress, medication, or illness. If male pattern baldness is not the issue, then you should see your physician to have some test run to make sure your hair loss is not due to the latter.

Normally you lose up to 100 hairs a day. Every 30 days or so you will lose more due to replacement; a new follicle is pushing an old one out.

I have been a licensed, practicing cosmetologist for 37 years +.

Hope this helps.

Source(s):

education and experience

This is the common problem in the age of 20 , actually due to fast life we don't give concentration on our diet . If we take proper diet full of vitamins . protein etc we doesn't have to face this problem. 

Rest take some precautions like don't apply chemical rich products on your hair that can cause damage . and also protect your hair from the sun light.

You should try to consult a dermatologist about your problem. They deal with such kind of issues all the time, and for sure they can give you a good idea of whether your loss is in the range of normal or represents something else.

use a oil called trichup its really helpful and yeah you can go to some skin therapist he/she can help and find out what problem you are suffering through

Massage your hair with olive oil and take balanced diet...hope it helps.