Related: 7 Best Low-Maintenance Haircuts for Thick Hair, According to a Celebrity Stylist Butter blonde is the warm, ...

If your hair is naturally blonde, color-treated blonde or gray ... Color-depositing shampoos add specific pigments (either purple, blue or green) onto the hair shaft to maintain your desired ...

Ideal for blonde and highlighted hair, the formula has salicylic acid which she said can also help remove unwanted pigment.

What you really need? A purple shampoo. Yep, unlike darker brown hair colours, blonde hair has an annoying tendency to fade and become brassy. Thankfully a toning purple shampoo can help prevent this.