First, take a deep breath. You didn’t do anything wrong. Blonde hair turning yellow is as natural as your favorite white t-shirt turning grey after too many washes.
Think of your hair as a sponge. When you lighten it, you open up the cuticle, and it starts soaking up everything around it: minerals from your water, pollution, and even the oils from your own scalp. That yellow is basically a tiny grime party happening on your head.
The biggest culprit? Heat styling. That curling iron you love? It’s frying the color right out. And let’s not forget your trusty, cheap shampoo that smells like a piña colada—it’s probably doing more harm than good.