14 Hair Colour Terms to Know Before Your Salon Appointment
14 Hair Colour Terms to Know Before Your Next Salon Appointment
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A double process is a base colour plus highlights. Make sure to book additional time at the salon if you want a two-step hair change, which looks more natural in the end. Double-process has gotten a bad reputation over the years, but it doesn't have to be unhealthy for the hair when done by a professional.