The Ultimate List of Must-Have Products For Blondes

When you consistently color your hair, it can break down the strength of your hair cuticle. You'll want to use products that not only soften the cuticle, but also strengthen it. A key ingredient to look for is protein. Pureology Perfect 4 Platinum Miracle Filler Treatment ($26) includes a vegetable-based protein that helps fill gaps in the cuticle, plus full-spectrum sunscreens to protect your mane.

Just be sure not to overdo it with protein, or your hair can break.