Or hormonal, I heard its called hirsuitism. How do you stop this?

Abnormal hair growth. Hirsutism is growth of hair, usually in women, where not normally seen. This can be caused by a number of things some as simple as heredity but may indicate a hormonal imbalance. Evaluation by a doctor to determin the cause. There are some medications that help decrease the hair growth. Many women also use laser hair removal or electrolysis.
Depends on cause. Onr must determine the cause of the hirsutism. For example androgenic patterns of hair growth and acne that occur in such conditions as poly cystic ovaries are diminished with the use of testosterone blocking meds such as spironolactone.