If you’re brunette and have lowlights that get brassy if they aren’t toned regularly, this product basically toned my hair back to a cool brown and saved me a lot of $$$ and time to do it at w salon. It’s semi-permanent, deep conditioning and adds shine! I tried the other variation of their product offerings and this one works better for a light color correction that lasts 7 washes! LTKBeauty LTKStyleTip