Color treated hair has special needs. Follow these tips to keep your hair looking great:
Use a shampoo created especially for color-treated hair (Revlon, L'oreal, Aveda and Clairol all make them)
Wear hats or hair products with sunscreens to prevent your color from fading and drying in the sun
Dampen your hair with bottled spring water before getting into a chlorine pool (it will help dilute the chlorine)
Condition regularly
Don't brush hair when wet -- use a wide-toothed comb
Blot your hair dry -- don't wrap it or roughly dry it with a towel
Avoid overdrying -- blow dry until hair is almost, but not entirely, dry