Famous Hidden Rainbow Hair Color Ideas. Hidden rainbow hair for an intriguing take on rainbow hair, try a ‘hidden’ rainbow. In this hair color tutorial i will be showing you guys two different rainbow hair looks that can be.

When the hair lays flat, it’s hard to tell that it was dyed; While this trend is stunning, it can be tricky to create — depending on what your client wants. But don’t fear — we have listed some hidden rainbow styles and coloring tips below to help you create the coolest looking rainbow hair.