Have you colored your hair blonde? Bleached it? Highlighted? Then this post is for you! We’re gonna talk about: Purple Shampoo. Never heard of it? Then hang tight. Here’s what you need to know about purple shampoos.
What is Purple Shampoo?
Purple shampoo is literally ‘Purple’! It is your regular color safe shampoo, but with added purple pigments (such as D&C Violet 2) that are meant to enter your hair during shampooing. Sounds scary? Fear not, it doesn’t turn your hair purple if used properly. Read ahead.
Why is this relevant to blonde colored hair?
Blonde hair fades as well over time, although it may not be as obvious as darker colored hair. Fading from blonde hair(especially the cool toned shades) is synonymous with the surfacing of undertones such as yellow and orange which we refer to as Brassiness. And that’s where purple shampoo becomes handy!
How does hair appear brassy?
For those who started dark, a significant amount of bleaching is required to reach the yellow tones of blonde hair. Often times, the hair cannot be not fully bleached leaving behind our natural pigments. Generally, the darker the hair, the more challenging it is to lift the underlying pigment.
For example, if your natural color is dark-brown , then your natural pigments are reddish-brown. As the blonde color fades, this reddish hue will become more prominent. The end result: brassy blonde hair.
So, what does a purple shampoo do?
To counteract this brassy color, complimentary colors are required. Complimentary colors are colors that when mixed together with the primary color gives white (neutral). From the chart you can deduce that if you mix purple/blue dyes to the tones of your yellow-orange hair, the final color will be no longer be brassy. So purple shampoos act as a color refresher for blonde hair.
How to use a purple shampoo?
The purple shampoo can be used once a week. It should be used just like your regular sulfate-free shampoo, but more targeted in the lighter areas. Depending on how much retouch you need, you can leave the shampoo on for a few minutes.
Leaving products that have purple pigments on for too long is a bad idea unless you want lavender shades in your hair. Luckily these dyes can be washed out fairly easily with a regular shampoo.
Here are various examples of purple shampoos.
Points to note
- There are purple toners out there that require some light cuticle lifting with 10V hydrogen peroxide solutions. However, depositing color with lifting could go wrong in so many ways: for example, it could shift your color to an ashy shade. That is why a rinse-off product like shampoo is best recommended for a minor color touch-up.
- Some stylists do not recommend purple shampoos for those who just colored their hair. It can create shade shifts.
- Use the shampoo as as you start noticing the loss in vibrancy/tone.
- Those with silvery hair can benefit from the shampoo as well. But be wary of over-depositing color.