"Beauty retouching is probably one of the most popular application areas in which Adobe Photoshop is used extensively. There are two simple reasons for that. First, Photoshop offers a variety of advanced tools to smooth out skin and hair, optimize body proportions and emphasize some beautiful details. And second, if you have some experience with Photoshop it is easy to learn the basics and quickly produce very impressive and beautiful results.
Of course, beauty-retouching is a quite deceptive art. The masters of Photoshop create illusions which are hard to tell apart &8212; unless you have both a genuine photo and the final result in Photoshop and can directly compare them. In fact, every day we consume perfectly retouched stars and models online and offline which just look different in the real life."
View the 70 tutorials at http://www.smashingmagazine.com/2008/07/15/70-beauty-retouching-photoshop-tutorials/