### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Hey, I am a young male that recently turned 20, my question is about facial hair, my facial hair seems to be growing slowly and I am just worried that, like a few people I know will only grow in certain patches and stop there, how old until my beard is fully grown, will acne prevent hair from growing on that spot, does acne cream stop hair growth because of the chemicals in it, do acne scars without a doubt mean a bald spot for my beard in that scar area. At what age should I expect full growth, also, I think I have noticed my beard growing sligthly quicker when I exercice, this beeing from the raise in testosterone I assume right? I know my questions are a little all over the place, I would really appreciate an asnwer to all of them

### output:

Hi Many, Welcome and thanks for posting your query to Chat Doctor. So you are worried about the growth of facial hair (rather beards) in uniform manner. Now to solve your queries:1. Our growth in all manners continues till 25 years of life, so the new growth of facial hair on beard will also be growing till that time. It all depends on the family pattern and genes which we carry from our ancestors. So, basically it will be depending on your parents side.2. Neither acne nor acne scars and creams prevent the growth of hair. None of the chemicals in acne creams are responsible to prevent hair growth in general. But if the scars are quite deep then at that localized area only you can have damage to hair root, overall is negligible unless you have deep scars all over face.3. Yes due to exercise we do have a bit of increased metabolic rate leading to good hair growth. Lastly there is no medical treatment in this world which can cause growth of hair in only beard area and your questions are exactly the same which a young man have (and even I had when I was at your age) so don't worry and be happy.With the best health and beard wishes, Chat Doctor. 