MAC Extra Dimension Eyeshadow ($20.00 for 0.04 oz.) is going to be a permanent formula with eighteen shades to choose from (I reviewed seventeen of them). All of the shades have been released previously as limited edition offerings. The collection has been postponed to May 14th. They’re a wet/dry formula that ranges from semi-sheer to semi-opaque color dry and mostly opaque to opaque color damp. I get slightly longer wear when I apply the eyeshadows damp, but the wear ranges from six to eight hours.