How long after a small FUE is OK for a hair "relaxing" or Brazilian blow-dry?

I had a 1000 grafts on a widows peak 7 weeks ago. I think it went OK. I have an occasional relaxing treatment to straighten hair. And was thinking of trying a Brazilian blow-dry which uses chemicals and heat. How long after FUE is safe? I have seen "6 weeks before you colour" here. But wanted to check if anyone had any thoughts about the above? I don't want to risk damaging the grafts but would like a treatment. Thanks in advance.