Honestly there is no special shampoo or conditioner that will revert your curls back after the pattern has been changed due to heat damage. I too am currently going through heat damage where I have straight pieces in the front. I cut more than half of those pieces because they weren't not reverting and I couldn't deal with the two textures. I will keep cutting them off as my hair grows longer. As for the curlier/wavy pieces you should look into the curly girl method where you maintain your hair with products that do not contain silicones, sulfates, or parabens in order to bring out your curls fullest pattern potential.