Although strictly avoiding sulfates and silicones is not for everyone, I would recommend all curlies at least give it a try and see how your hair responds. The problem with silicones is that many (but not all) can build up in your hair if they are not removed regularly with either sulfate or coco-betaine shampoo. Build-up can lead to frizz and dampen your curls, and regular use of sulfates can be damaging to your hair. So I'd recommend trying to use products without either and see how your hair responds.