Know when to go lighter or darker. The rule is as follows: For permanent dye, choose a color a smidge darker than what you want because of the strong developer, says Ionato. With semipermanent dye, however, err on the lighter side of the color you're looking to achieve. "Semipermanent formulas don't have a developer, meaning they get darker and darker the longer you leave them in your hair," says Ionato. "It's safer to choose a color that's a bit lighter from the get_go."
Prepare Color_Treated Hair for Hot Tool Usage with Heat_Protecting Products : If you use blow dryers and irons on your hair, make sure that the hair is completely dry before using heat so it won’t cook from the inside out. Prepare the hair with a fortifying leave_in conditioner and finish with a protective hairspray. Maintain a Healthy Diet to Keep Your Hair Looking Great : What you eat has everything to do with the health of your hair, and how it looks. The nutrients from a healthy diet provide the energy that fuels hair growth and luster. Foods that include iron_rich protein feed your scalp and hair by building strong keratin, the protein that strengthens hair, improves texture and stimulates growth. Consume lean meat, fish, low_fat cheeses, egg whites, spinach and soy to keep your color_treated hair looking its best. Between meals, snack on fruits, nuts, vegetables and grains.