Whether you’re in the mood to try out the latest hair color trend or dyeing your hair is already a permanent fixture in your hair journey, it’s important to know about the different types of hair color—including permanent hair color , semi-permanent hair color , etc. and how they each interact with your locks. Not all hair color is created equal, and each type serves a different purpose.
Strands in shades of gray and pastels have been lighting up our social media feeds recently. While these on-trend hair colours certainly make for pretty pictures, not everyone is ready to keep such a bold look for the long term. This is where temporary hair colours comes into play. Temporary hair dye, otherwise known as wash out hair color, coats only the outside of the hair shaft, so the results don’t last. This means that when you go to shampoo your hair next, the new color will wash out and your hair will return to its natural shade, allowing you to experience a new hair color without a major commitment. However, you should know that damaged hair that’s dyed with temporary hair color can appear stained after continued use over time.
Semi-permanent hair color is ammonia-free, so its molecules get under the outer cuticle of the hair shaft but, unlike permanent dye, doesn’t penetrate the strand. Instead, they wrap around the hair’s cuticle, creating a coating of color that’s gradually washed away. Think of semi-permanent hair color as a lip stain. You know it will gradually wear off and you’re free to try another shade. So how long does demi-permanent hair color last? Approximately 24 shampoos.
Permanent hair color is exactly that—permanent. When you apply it to your hair, it adds to the natural hair pigment so that the color you’ve chosen can replace it. It does this by opening the cuticle to let dye into the hair in order to deposit the permanent color. So how long does permanent hair color last? Technically, it never truly leaves but the color does fade over time and can certainly be dyed over with a new shade whenever you’re in the mood for a change.
Demi permanent and semi permanent seem very similiar but there are quite a few differences. The biggest difference is semi has no developer while demi will have a peroxide based developer. Because of this, semi’s only coat the hair shaft. The peroxide slightly opens the cuticle of the hair shaft allowing the demi color to penetrate. So in general, semi’s last about 12 washes and demi’s last more like 12–24.
With no developer, semi’s are more for slightly changing the tones of your color. More of like a blur effect. Demi’s can alter your color slightly. They don’t have the manpower to drastically lighten your color, but they can totally darken it.
If you have naturally dark brown or brunette hair, there is a good chance you’ll need a hair color bleach to lighten your hair before dying it to a lighter shade or going blonde altogether. While bleach is a great way to lighten and brighten your hair, be aware that using it can lead to damage.
Not every look requires all-over color, which is where hair highlights come into play. These are achieved by placing the color on different segments of the hair to help promote depth, tone, and shade. The chunky-looking highlights of the past are no longer the biggest trend, now a more dimensional, subtle look has become the go-to way to help refresh tired locks. Instead of being limited to one type of highlights, there are quite a few you can choose from. These include: