6 months is a long time to still be having the effects of that. I had a weird lip exfoliator do the same thing to me and man did it suck for a month or two. Have you seen a doctor/dermatologist? I bet they could help a lot.

Just be super gentle with your skin, don't want it to freak out too bad. Do you maybe have rosacea and what have you tried thus far?

thanx clambak3 for your response:),i get this irritation from the first using of exfoliator,i used bioderma sensbio forte cream and bepanthen cream(vit b5) ,redness decreased a little but it's still here,i also went to dermatologist and he said that's just redness,the problem tha's i have pitted scars(boxcar scars) and redness make them more worse, the redness looks like a pinkish, i wonder if it's may be hyperpigmentation not a redness?!!