Similar to Hair Color, the Hair Color Booth app lets you experiment with your hair colour in crazy shades. You can also select just some of your hair to try different colour streaks or ombre colour combinations. This is a great app to freak out your mum or friends too! There's only a few colours in the free version but it's enough to try some rainbow hair.
The Good Housekeeping Institute breaks down why: "Other than henna, any commercially available hair dye store_bought for home use or found in salons uses chemical actives for them to work," says Birnur Aral, Ph.D., Director of the Good Housekeeping Institute's Health, Beauty and Environmental Sciences Lab. "By and large, these chemicals are synthesized substances." Even when the packaging claims to be all_natural, organic or chemical_free which is literally impossible because everything, including organic things, are made of chemicals that could basically be an outright lie. This is because the FDA can't do anything about the use of these terms regarding cosmetics.