Classikool Ultra Fine Grade Pure CMC (carboxymethylcellulose). Also known as Tylose or Tylo powder. *Free UK mainland postage So many happy customers here is a couple Brilliant product, does exactly what is says on the packaging! Sugar flowers made and hardened beautifully, leaving them cleancut and works way faster than just making and leaving - cuts time down by at least half in my opinion. Verified Purchase Fantastic product! I wish I had known about tylose powder a bit sooner. This product arrived very quickly when allowed me to make a model for a cake the day before the cake was needed!! I would have probably been waiting over a week for my fondant to dry if it did not have the tylose powder in it. I now use it all the time. I just add a pinch into the fondant and knead it in, although if you add too much you'll soon find out as the fondant crumbles and dries out.