Worried that this violet shampoo will darken your hair? HELIO has been formulated to tone down yellow tones without the risk of over-saturation! ​​​​​​​​ ​​​​​​​​ Use 1-2 times a week for best results. ​​​​​​​​ ​​​​​​​​ Image by @samantha_j0_hair