Chemical burn with dettol. How much more time will it take to completely clear? (Photo)

i am from pakistan...I accidently applied undiluted dettol over my face 2 months ago for clearing beard dye stain over skin...it got chemical burn...initially there was crustung and it healed in 8 days but then got pigmentation....i am using topical skin bleaching creams and had 2 sessions of picoway resolve...it had improved alot but had not completely gone...how much more time will it take to completely clear?