The L'Oréal Serie Expert Chroma Crème Ash Shampoo is a color-correcting and conditioning shampoo for natural and colored brown hair. While washing your hair and daily influences, warm and orange undertones will appear in your brown hair. Especially with colored hair, these color tones will appear after a few washes. To neutralize these warm tones, for brown and light brown hair there is the Chroma Crème Ash Shampoo with blue pigment. The shampoo should soak for a minimum of 5 and a maximum of 15 minutes, depending on the strength of the color neutralization you want. The blue pigments return your hair to a cool brown Ash color. Many neutralizing shampoos only affect the color of the hair and work drying, but this L'Oréal SE Chroma Crème Shampoo actually has a cleansing and conditioning formula as well. Proper care also keeps the hair color more beautiful all over the hair. After using this shampoo, your hair is both cleansed and cared for. It will have a cooler tone due to the neutralizing color pigments, but the color will also look fresher, brighter and shinier.