I'm regularly buying a variety of different types of Oytra clays since three years or more, after buying my first set of 12 colors of mini clay pack from Amazon. I have crafted my Cartoon Movie Characters and animation Superheroes for my grandsons, other little relatives and earned a band of my die hard friends because Oytra never fades during or after baking. The finished products stay good even after washing from alcohol to remove fingerprints. Their stability is great. Their flexibility is great and their appeal is ultimate.