Ammonia-Free Hair Colour: The Ultimate Guide For Hair Colour Pros

When it comes to permanent hair colours that go the distance, ammonia is a tried-and-true ingredient. There's a reason it’s appeared on ingredient lists for such best-selling products as Koleston Perfect. But what about ammonia-free hair colours? Here, we're breaking down the benefits of going with or without ammonia, so you can make the right choice for your clients.

Let's take a closer look at ammonia-free hair products...