American Crew Precision Blend Peroxide 15Vol developer works with colours in the American Crew Precision Blend range, which are designed to work in with your natural hair colour and blend in your greys.
The combo is easy to use at home, and will last for 4-6 weeks. Will take you about 10 minutes from start to finish.
Works with all American Crew Precision Blend colours:
Did not do anything, was expecting it to tone down the red in my hair, tried different strengths of product still nothing changed. Not recommended as a toner.
