Question: What’s the difference between semi-permanent and permanent hair color?
Answer:
If you’re looking to try a new hair color, or go a shade darker, for a short amount of time, try a semi-permanent hair color. Because it only coats the outside of your hair and doesn’t contain ammonia, semi-permanent color washes out in about a month. Though if you wash your hair more frequently, it may not last as long.
Permanent hair color typically contains chemicals like ammonia or peroxide, which penetrate your hair’s cuticles to deposit color into the hair shaft. This type of coloring product allows you to change your hair color to just about any shade; you can go darker, lighter or even cover gray. (Note: If you don’t want to use harsh chemicals on your hair, there are permanent hair color products available without ammonia.)
