Specifically for people with gray, white, silver, or blonde/highlighted hair dealing with yellowing or brassiness — not a general everyday conditioner for other hair colors. Works on natural gray/white hair as well as color-treated or lightened hair. It's sold retail to consumers and also used by licensed colorists as a maintenance step between salon toning appointments.

If gray, white, or blonde hair tends to turn yellow or brassy between salon visits, this handles the toning and the conditioning in the same step, instead of needing a separate purple shampoo plus a plain conditioner.

After shampooing, work through hair, wait one minute, then rinse. For extra conditioning and color-refreshing, leave on for 2 to 5 minutes before rinsing.

Pros:

• Neutralizes yellow and brass tones in one conditioning step instead of needing a separate purple shampoo
• Can be left on for 2-5 minutes for a stronger toning boost when needed
• Sold at retail, so it's easy to maintain salon toning results at home between appointments

Cons:

• Only useful for gray/white/silver/blonde or highlighted hair — the violet tint isn't intended for other hair colors
• Leaving it on too long or using it too often can leave a visible violet cast, especially on very light or porous hair
• Contains parabens (methylparaben, propylparaben), which some shoppers prefer to avoid