Those hair dyes, color your hair only on outer cover just like painting. It looks artificial. These dyes are not mixing with the original natural color inside the hair. Therefore using dyes including henna will gives you only an artificial outlook. Not only that it will change the natural shape of your hair. This also increases hair falling. The other problem such people facing is, turning their hair into brown when washing the dye. It is very ugly and abnormal outlook. Therefore anyone can recognize that, they dyed their hair.
The solution is using cosmetic hair creams which produce for keeping the natural color of the hair. Using these cosmetic creams makes natural color of the hair. And it is also able to mix and create a suitable hair color. Water is not used for this mixture but the solvent using is free of ammonia and not harm for the skin. Therefore this will not cause to hair fall or browning. This makes a treatment for hair and after coloring you have to use color preservative conditioner. You can continue with coloring only the growing amount of hair monthly. This will keep your natural hair color for long time.