Day 1: Medium Hair

Show off shiny, clean strands with a simple, center-parted look. And for shoulder-length hair, a low, soft twist is Guzzo's pick for the start of a hair marathon. It will prep your hair for more tousled styles. Best of all, it's easy (and quick!) to pull off.

To get Kourtney's demure-but-glam look, pull back freshly washed hair into a low ponytail at the nape of your neck, and secure it with an elastic. Then, twist the body of the ponytail until it’s wound into a tight, pretty U-shape and secure the end in place over the base of the original ponytail with another elastic. Don't stress over pieces that have fallen out around your face—they'll only enhance the look.

RB Tip: For extra flair, place the ponytail off-center and to the side.