Before you run to the beauty supply store, check your pantry. A simple tomato sauce mask can work wonders. Yes, tomato sauce.
Just rub a little into your dry hair, let it sit for ten minutes, and wash it out. The red pigment in the tomatoes helps neutralize the yellow, and it smells like pizza night. It’s a little messy, but it's a cheap, hilarious solution.
How To Fix Yellow Roots after Bleaching | Bleach blonde hair with roots
Another trick? Apple cider vinegar. Mix a tablespoon with water, pour it over your hair after shampooing, and let it sit. It closes the hair cuticle and rinses away the mineral build-up that causes yellow in the first place. Your hair will smell like a salad for a few minutes, but the shine is worth it.