Facial hairs appear due to hormonal imbalance. Hormonal therapy or laser gives you a superficial makeover. The main problem lies in the abnormal hormonal secretions, which are influenced by various stress which one undergoes. Stress might be financial, emotional, personal, inter personal dur to anxieties, fears, insults, failures, etc.
Effecasy of any treatment lies in identifying what stresses you n how you can device a solution so that it does not affect you. To help you in this do consult a good Homoeopath.