Back when I used to use cones I would slather the cone-serums straight onto my wet hair. Big no-no haha. Now if I were ever to go back I think I would use all my CG knowledge and use cones smartly. Like use them as a sealer only... and make sure all my products underneath were CG-friendly so they could properly moisturize the hair.
I have to say I got frustrated at one point in the last few weeks and used a bit an old bottle of the Body Shop Grapeseed serum I had laying around. I put it on top of my CG leave-ins etc on dry hair. Good news is my hair was shiny and smooth. Bad news is it pulled out my wave in an hour. I clarified afterward and that was that.
You can always try. Cones aren't going to make your hair evaporate lol! You'll just have to be ok w/ the dryness you'll get from using a coco-betaine low-poo or mild sulfate shampoo to clarify afterward.