Blemish Tool

i was on iphoto and one of my really good photos i thought i might edit a bit to look even better, i dont know iphoto to well and i tried using a tool called re blemish or something and i found out it blurred, which isnt what i wanted, i didnt press done i just exited it and hoped the changes wouldnt be saved but they were, is there anyway to fix it?
holy shit it randomely went back to normal, i have no idea what i did, but now does anyone know a an easy photoshop program? im gonna edit it so its good now