Rated 5-Stars on Amazon Instant Video. An amazingly practical way to perm hair is easy-learned at home or in the salon. This classic, acclaimed by millions of stylist around the world, is the formula for directionally perming hair for longer-lasting natural looking waves by varying the shape and size of sections while also alternating the angle and size of perm rods. This formula for success is well demonstrated in detail step-by-step on a live model with a great many excellent illustrations and diagrams.