Hard to tell
Hair thinning and loss is listed as one of the side effects.
Whether this is your case or not, it is hard to tell. Another possibility is that you may not grow hair on the areas of your face that have acne
scars, or it may just be the hair distribution pattern you have, as some men don't have a continuous hair growth pattern on their face. You may need to get a consult from a dermatologist on that.