Color coded: Matching color is the single best way to make extensions look natural. Go with the hue of your ends, not your roots, since you’ll see the bottom the most, says Corinne Asch, a hair expert in Beverly Hills.

Bigger isn’t always better: Add-on hair comes in every form imaginable. Just remember: Smaller pieces stay on best, since they weigh less.

Perfect placement: To apply long pieces, part your hair from ear to ear around the back of the head. Tease the base of the part (to give the clips grip), then hook the hair below. When you let down the top, hair blends together.

Damage control: Take out extensions before you go to bed to keep your own hair from breaking.

Oh, and where to buy: Visit your local beauty supply store, or check out the new cult favorite HairDo, from Jessica Simpson and Ken Pavés, on hsn.cm.