Article: Red hair color tends to fade fast because the molecules that make up the dye are large. To slow down the fading process, resist the urge to wash your hair often. Do not wash your hair more than once every other day. If your hair gets oily fast, try using dry shampoo to keep it looking fresh in between washes. Don't take hot showers. Hot water will make your color fade faster. Red hair dye is prone to fading. Apply a semi-permanent or demi-permanent dye to your hair from time to time to gently touch it up and keep it looking rich. If you need to touch up the roots, use a permanent dye. Remember that dying your hair is damaging. Because of this, you'll want to make sure you do deep conditioning treatments on your hair from time to time, especially just after you've dyed it. Also be sure to condition your hair every time you wash it.
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Wash your hair 2-3 times each week. Touch up the red color. Deep condition your hair.