Make It Last
To stretch out the time between dye jobs, "always use shampoos formulated for color-treated hair," advises Warren. Says Hazan, "They're more moisturizing than regular ones."
- Color Extend shampoo, $12, Redken.com for stores.
- Bain Chroma Riche shampoo, $32, Kérastase Paris.
- Clarity Color shampoo, $26, Ted Gibson.
