I use Color Conserve shampoo to keep my color true; harsh shampoos can strip color in no time.

there is a reason that Reese spends the money she does on her hair. part of it is the skill of her colorist.

You can't get that exact look at home. Even with the highlighting kits it's more of a striped effect, which can look cute too but it's different from what she has done.

Professional highlights blend with your natural color, so they don't have to be retouched as often as with a solid color. Even though it's expensive, you might be able to get away with waiting 2 months or more between colorings.