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Do Keratin Treatments Change Hair Color?

If you’re fighting frizz or dried-out hair, then you’ve probably seen keratin treatments as a way to fix those issues. However, for those with dyed hair, the question is: does keratin change hair color?

Yes. But, the good news is that only a few folks have to worry about this, and there are ways to prevent it!


What is a Keratin Treatment?

what is keratin treatment

Keratin is a protein that makes up our hair and other components of our bodies, like our skin and nails. This protein acts as a sheath around your hair and protects it, keeping it looking glossy and youthful. That’s why keratin treatments will strengthen and straighten your hair.

Keratin treatments involve a stylist applying the treatment to your hair when it’s wet. The wet hair helps out the keratin treatment as the stylist brushes it through your hair. Once it’s in place, the treatment will have to stay in for about 30 minutes.

These are the benefits of getting a keratin treatment done for your hair:

  • Smoother, Shinier Hair: Keratin smoothes out the cells that make up your hair, giving your hair a shiny, glossy look.
  • “Longer” Hair: While hair doesn’t grow faster with keratin, it helps keep the ends from breaking off and allowing you to grow your hair longer.
  • Reduced Frizziness: Since keratin smooths out your hair, the hair treatment helps keep your hair managed and styled.
  • Long-Lasting Benefits: As long as you don’t wash your hair more than two or three times a week, this treatment can last for up to six months.

However, there is a downside to using keratin if you dye your hair. Keratin treatments can lighten the coloring in your hair, especially if you have a light brown or blonde hair color.


Can Keratin Treatments Change Your Hair Color?

Yes, keratin treatments can lighten your hair color. The good news is that this is something that only those women who dye their hair have to worry about. For those of you who dyed hair a darker color or don’t dye hair at all, you don’t have to worry at all.

However, for those that dye their hair lighter colors, you have been warned!

Keratin Treatments Change Hair Color!

The reason why it changes color comes down to the chemicals that are in the lighter hair dyes. Once you have the keratin treatment put in, the chemicals that go along with the keratin to keep the treatment in place can react with the hair dye.

When this happens, the dye turns one or two tones lighter and then settles into your hair. Ultimately, you’ll end up with a lighter color than you had initially.


How To Prevent Lightening Your Hair After a Keratin Treatment

dye your hair before keratin treatment to prevent lightening

Luckily, there are ways to methods to avoid hair lightening:

  • Change to a Different Color: If you’ve been looking to change to a different color, then a darker hair dye won’t be affected by the keratin treatment.
  • Dye Your Hair Shortly Before the Treatment: If you dye your hair ten days before your treatment, the dye will have time to settle into your hair and become unreactive with the keratin.
  • Wait to Use Your Dye: Your hair will be strong enough to dye it after the keratin treatment. Wait 15 days after your keratin treatment to dye your hair so that the keratin has time to develop in your hair first.


You don’t have to do all of these tips to keep your hair from lightening. Pick the option you prefer, and you won’t have to worry about your keratin treatment changing your hair color!


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