Have you tried it?
A new viral challenge is sweeping the internet as women film themselves putting purple shampoo on their hair, to see if their locks turn purple.
It's called the 'purple shampoo challenge' and those who have tried it claim that it can completely transform your hair colour.
But there's a catch - the shampoo only works on people with highlighted, blonde or grey hair.
TikTok is responsible for the majority of the videos with the hashtag #PurpleShampoo boasting thousands of views.
The clips show women squeezing copious amounts of purple shampoo onto their hands and slathering it onto dry hair, to see if the purple effect takes hold.
Also you don't need to put the shampoo on dry hair, you can use it in the shower just like a regular shampoo.
If you want to try it out for yourself, you can purchase a bottle from your local supermarket or chemist.
