Putting hair dye on thinning hair can be damaging and cause more problems if it is not done correctly. Thin hair needs to be treated with care in order to make it appear thicker and to keep it from becoming more thin over time. It's a good idea to seek professional help when using hair dye for thinning hair, as hair stylists usually have a better idea of which chemicals are too strong for the hair. If dying the hair at home, it's often best to stick to a light color that's not too different from your natural shade, choose toners or highlights instead of permanent dye, and pick products with the most gentle ingredients available.
It is important to realize that lighter colors make the hair look thicker while darker colors make the hair look thinner. You may want to choose a dye that offers two or more colors to create texture because of the way that the different shades will attract the light. Hair dye that is a few shades lighter than the natural hair provides a natural-looking appearance and usually does not contain as many harsh chemicals as those that change the hair color more dramatically.
The chemicals used in hair dye should not be too strong in order to prevent more damage and further loss. Semi-permanent hair color, toners and highlights provide lighter color and the appearance of thicker hair without the damage that peroxide or bleach can cause. There are many of these products available for purchase to use at home as well as for application in a hair salon. Products to use at home should not contain harsh chemicals and the directions should be followed precisely to avoid leaving it on for too long.
Hair that is thinning requires extra care and attention, and dye should not be used more often than necessary. If the color begins to grow out at the roots, it is possible to use hair dye only on the roots to avoid damaging the rest of the hair. This can be done at home with kits made specifically for this purpose or by a professional stylist at a salon. Going to a salon and working with a professional often produces good results because the person is experienced at dealing with all types of hair and will attempt to avoid causing any additional damage.