Can you Dye Your Hair After Using Sun-In? How long should you wait to do it?

lighten her hair with sun-in

Are you thinking of dying your hair after using Sun-In?


If you are, stop! You might be making a decision you’ll regret. Want to know why?

  • Because you should wait at least four weeks before dying your hair.
  • In the meantime, do a few deep moisturizing treatments.
  • Once you’re ready to dye your hair, make sure to use an ammonia-free dye.


 Whatever you do, don’t make the same mistake I did. I dyed my two days after using Sun-In, and I’m still not over the hair disaster it caused and the tsunami of despair that followed. 

Do you have a minute to hear my story?


If you are, take a seat, and grab some Kleenex, because I’m sure you’ll need it.


It was in early summer, and who doesn’t want some highlights in the summertime? It’s such a unique color that it looks like the sun is lighting up your locks.

And that is exactly what I wanted for my hair. So, I started using Sun-In. Are you curious what convinced me to give it a try?


Actually, it was my mom. She used to use it to lighten her dark brown hair.

So if it worked for my mom, it should work for me, right?


After almost a month of using the product every three or four days, my hair had quite a few highlights, but I was getting impatient.

I wanted it to be more blond, and fast.

And what happens when you get impatient? You take shortcuts.

And what was my shortcut? Dyeing my hair.


So, without thinking twice, I rushed to the nearest pharmacy right after work and bought some hair dye.

Did I stop to think about the type of dye I should buy? Of course not. I was desperate and in a hurry.


I got home.

Did I take a moment to check on the health of my hair? Again, of course not. We’re still talking about the same impatient person.

Did do a test strand? Nope. I was still rushing.

I just went ahead and dyed my hair, as was still in a hurry forty minutes later.


But this time, I was in a hurry to turn back time. Turn back time and go back to that crucial moment when I crossed the point of no return.

Because at this point, my hair was more fragile than cobwebs.


  • I could almost see my hair unravel, and the strands stretch like bubblegum until they almost broke.
  • The ends were so split they looked like the acute angles I used to carefully draw when I was a student in math class.
  • And the color... There's no words to describe it! It's hard to say what color your hair is when some strands are bright yellow, others are orange and still others are light brown.

Would monstrosity be the word?


Now you can see why I wanted to turn back time, but unfortunately, I don't have that superpower.

The only powers I had were patience and common sense. And I threw them both out the window when I decided to dye my hair right after using Sun-In.


But you still have time.

  You have the time to wait a moment, make the right decision, and not make an expensive mistake like I did./su_highlight]

Are you wondering just how much this mistake cost me?


That will be revealed at the end of this article because first, I'll warn you of the consequences of making a mistake now could have in the future.

Will you accept my help?


Then keep reading, because in this article we will discuss:

  • How long to wait after using Sun-In to dye your hair.
  • What type of dye to use
  • How to prepare your hair to be dyed
  • Tabla de Contenidos


    Why you should wait after using Sun-In to dye your hair

    works on blond hairs

    I could write endless philosophical ideas on the importance of patience. Like, patience is bitter but its fruit is sweet.

    Or good things to come to those who wait.

    But pithy sayings won't help when it comes to hair.

    So instead, I'll just tell you this:


    • If you don’t wait long enough to dye your hair after using Sun-In, you’re going to damage your hair.
    • And when I say “enough time” I mean a month at least.
    • I’ll say it again, just in case you’re skimming through this article. One month at least.[su/_list]

    And there are a few reasons for this.


    • First of all, some people find that their hair darkens a bit when they stop using Sun-In.

    So, it's worth your while to wait and see what the final tone is before applying the new color. After all, dying light brown hair is not the same thing as dying dark brown hair.

     Depending on your base color, a dye can cause very different results, and you don't want to end up with the wrong color. 


    • Second, whether you like it or not, Sun-In contains peroxide.

    Hydrogen peroxide opens the cuticle of your hair. This allows the sun, which acts like bleach when it reacts with Sun-In, to do its job and lighten your hair.

    But peroxide has its dark side: although it lightens hair, it also dries it out. Not only that, it can make your hair more porous.

    Do you know what happens when you dye porous hair?


    • It absorbs the dye much faster.

    This would be fantastic, if your hair was one even color.

    But if you’ve been using Sun-In, we both know that’s not the case. Sun-In creates lighter strands of hair, in other words, highlights.

    So, if you apply the dye on hair that’s been treated with Sun-In, some strands will absorb the dye much faster than others. Namely, the strands that have been treated with Sun-In.

    With what result?


    Hair that’s two different colors!

    And that’s probably not what you want.

    But if you dye your hair too soon after using Sun-In, multicolored hair will be the least of your worries.

    Because we still haven’t gotten to the worst part: hair damage.

    But we’ll discuss that a little later.


    What type of dye to use on Sun-In treated hair

    So far we’re discussed what could happen if you dye your hair after using Sun-In.

    But there’s more to discuss, and it’s not any better.

    Remember when I said my hair was as fragile as cobwebs after I dyed it?


    This is where we enter the danger zone. Like I mentioned earlier, Sun-In contains peroxide.

    As you might know, the cuticle is the outer layer of each hair, that protects and strengthens it.


    • Every single time I applied Sun In to my hair, it was damaging the cuticle.

    And on top of that, because I couldn't be bothered to wait a few days, I had to go and dye my hair after lightening it with Sun-In.

     But my biggest mistake was to use a permanent dye, which contains peroxide. 

    Basically, I took a bad idea and made it even worse.


    • What I did was damage my hair so severely that it would break by just combing it. Not only that, it had split ends and was very frizzy.

    So, once you've waited a month after your last Sun-In application, use a semi-permanent dye.


    For the one simple reason that it doesn't have ammonia. Yes, the color will fade faster, because it doesn't last as long as a permanent dye, but your hair will be healthier.

    And completely safe.

    After all, what's the point of a beautiful new color if it ruins your hair in the process?


    So far we've learned why you should wait a month after using Sun-In and use semi-permanent dye.

    But what should you do in the meantime? Twiddle your thumbs and wait?


    Of course not.

    Instead, you should nourish and strengthen your hair, so that the new color shines beautifully, just as it should.

    How? I'll go over that now. Remember, we're working on being patient.


    How to prepare your Sun-In treated hair for dyeing

    If I would go back in time, I would have noticed that my hair was drier than straw after using Sun-In.

    I'm sure it needed hydration more than a castaway lost at sea without a drop of water to drink.

    But I ignored my hair's cries for help. I didn't nourish hair. I didn't strengthen it. And here I am, crying over my sorrows.

    But you can hear me. And you still have time to help your hair and yourself.

    And it's easy to do, I assure you.


    • Once you stop using Sun-In, treat your hair with intense moisturizing treatment.
     If you can leave a moisturizing hair mask on all night, that's even better. If you wear a shower cap, your sheets will be safe too, and your hair will thank you. 

    It's not necessary to spend a fortune on hair masks. You can even use the same olive oil that you dress salads with.


    And now it's time to reveal the truth: What price did I pay for dying my hair right after using Sun-In?



    I had to cut six inches off my hair to remove the split ends and damaged strands. It's still frizzy now, even when it's not humid.

    And I had to darken it by three tones to even the color.

    I've come from the future to try and save you.  But now, the choice is yours. Will you listen, or let some hasty decisions destroy your hair?

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