Review on Aurora Sculpting Molding Air Clay by Heather Shaw

I am a professional sculptor and bought this to try. Worked about 4 ounces. Hands for an hour while watching a movie to feel it. After an hour it became hard, cracked and non-functional. I've read a few reviews of other polymer clays and Revain seem to have a habit of throwing out the old clay. I don't think I will buy clay through Revain again. I don't have time to fool around. If you get a good batch, it has good staying power and isn't too oily. It seems like you can use them with or without tools and probably do some decent detail work with them. I live in a high temperature, high humidity climate and work in an environment with moderate central air conditioning but no drafts.