Temporary hair dye is a type of hair dye that does not deliver permanent results. Most temporary hair dyes wash out after a few shampoos. Temporary hair dye is a fun way to change your hair color for an event or holiday or just to experiment with color without committing to a permanent change.

Temporary hair dyes differ from permanent or semi-permanent hair dyes because they do not penetrate the hair shaft. Instead, they rest on the top of the hair shaft and coat it. Since they do not contain ammonia, they do not have a strong chemical smell and are not as damaging as permanent hair dye. They are only intended for temporary use. If you desire a longer-lasting color, it's best to try semi-permanent or permanent hair dye.

There are several types of temporary hair dye available. Temporary hair dye comes in spray-on versions, pastes, mousses, gels and products that you can put on your hair during a shampoo. Temporary hair dye colors range from natural colors to primary colors and metallic shades. This variety of color choices and the fact that it washes out quickly make temporary hair dye popular with teens and young adults.

Apply and process the temporary hair dye according to the package directions. Temporary hair dye will maintain its color until you wash your hair. It may wash out the first time you wash your hair or within the next two shampoos. In some cases, it may fade gradually within a few weeks.

Even though temporary hair dye is designed to wash out after a couple of shampoos, be careful if you have extremely dry hair. According to Beauty Tips.net, if you have dry hair, the temporary hair color could enter the exterior hair follicle, making it difficult to wash out. Be sure your hair is healthy before using temporary hair color.

Although temporary hair dye is not as damaging as the more permanent forms of hair dye, some products can be harsh and may damage your hair, making it dry and brittle.

Even though temporary hair dye does not contain the strong chemicals found in semi-permanent or permanent hair dye, the ingredients may still cause an allergic reaction. Before applying temporary hair dye conduct an allergy test. Apply a small amount to the inside of your elbow. Cover it with a bandage and leave it on for 48 hours. If you have an allergic reaction to the product, do not use it. If your skin remains clear, it is safe to use.