I'm 20 years old and i have lot of hairs on both of my ears. why is it so?

Difficult answer to address completely, but has more to do with your parent’s external ear characteristics and how they were passed to you at birth more than anything else. Hair growth around the ears increases naturally with age, so expect that to increase over time...

The gene for ear hair is on the Y chromosome and it is a sign of maleness. It is not abnormal nor does it pose any health risk. If you cosmetic issue is of concern, you could get the hair follicles destroyed with a laser. Have a healthy diet, exercise 30 minutes/day, drink plenty of water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs.

Hairy ears: Researchers used to think that it was a trait men passed down genetically through their Y chromosome and because of increased testosterone in men. It is most common in men in India and Sri Lanka.Hairy ears can put you at high risk for swimmers ear. Water and bacteria can get trapped in the hair causing bacteria to multiply thus infection. You can shave it off or pluck it with tweezers. Or do laser