Hilo there! Here's the explanation on why red colour dyes or highlights don't last as long, compared to the blond shades...The reason: molecules of red dyes are bigger, compared to the blond colours. So, it is more difficult to penetrate into the hair shaft and so, most of the molecules get "coated" on the hair instead of entering the hair "pores".
In other words, the hair is not absorbing the red colour molecules properly.. and that is why every time you wash your hair, you'll notice the red dye keeps running...
Plus! the more often u wash your hair the faster the colour will fade!
Some people wash their hair 2 times ---> not recommended.
Please always use a conditioner straight after shampooing.
Generally, red colour dyes last about 14 washes on average.. Hair texture also plays an important role in locking in colour...(hair that looks and feels like "broom" texture or worse, I'm sure you all know what the verdict will be...)
So, in order to counter this problem, colour manufacturers come up with the range of INTENSIVE REDS. Molecules are made smaller to ensure better absorption by the hair but the downside of it: it is also harder to remove!
All in all its always best to check with the stylists and get a better understanding on what's best for you :)
Well.... another point to note: red tones are wonderful for many skin tones!
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