Talk to Dermatologist on Acne On Sides Of Forehead

when I was 15-16 yrs old acne start appearing on my face and forehead I applied detol mixed with water on both sides of my forehead . All other acne was gone naturally but the places when I applied detol is still having marks . I have visited dermatologist he gave me a tube but advised me to do laser treatment. plz suggest me any medicine or tube which can remove it without the need of laser. And also the problem of pores on nose