You might think the hair dyes lining the shelves of your local drugstore are the same as professional in-salon formulas, but the truth is that there are major differences between the two. Box dyes are pre-made formulas that are made for all hair types, while salon hair color is custom made for each client. Box dyes ...

They typically contain high amounts of ammonia, PPDs, nitro dyes, metallic salts, and even unclean henna. These are harsh chemicals that can be extremely damaging to the hair as well as cause reactions to sensitive skin and allergies.

So i suggest you go with Garnier Olia, Clairol Natural Instincts, Revlon Colorsilk Beautiful Color, and Maddison Reed Radiant Hair Color Kit as they are all ammonia free, which means it will do less damage to your hair.

On most heads of hair, that would mean getting a good 6-8 weeks between touch-ups – but sometimes, even with permanent dye, colour fade can happen within a few weeks. Why does this happen? Typically, hair dyes are water soluble. When you wash your hair, the dye molecules simply dissolve and your new colour rinses away.