Hi. First of all ecxessive hair on the face can be a sign of hormonal imbalance. It is called Hirsutism. For the facial hair only Laser hair removal is the permanent solution but if your periods/ hormones are not regular you have to treat that first.
Secondly laser per se does not aggrevate your acne.
Thirdly the cost may vary from 4000-5000/ session
Next Steps
You can visit a dermatologist for the same and if he/she finds that your hormones and all other criteria are ok you can go ahead with your laser sessions.
Health Tips
You require 6-8 sessions of laser yo be done once a month. Also u cannot do threading /plucking /waxing between 2 sessions.