A: The short answer is yes, you can color your hair after using Sun-In, but there are important factors to consider. It's possible to apply hair color after using the Sun-In lightening product, though it is recommend to wait at least four weeks after your last Sun. According to the manufacturers of Sun-In, you can surely color your hair after using the hair lightener.
Chattem Inc., the manufacturing company, also suggest waiting for at least 4 weeks to dye your hair after treating it with Sun. No, it's generally not recommended to dye your hair immediately after using Sun-In. Sun-In contains hydrogen peroxide, which can significantly alter your hair's porosity and structure, making it unpredictable to dye and potentially leading to severe damage or undesirable color results.
13K subscribers in the haircoloring community. This is a subreddit about hair coloring and hair styles. I had used Sum Bum hair lightener in my hair about exactly a year ago in the summer.
I liked it for a short while (I used the lightener about 2-3 times) but then it turned brassy so I waited until December to dye brown with box dye. I tend to get my hair color at Sally's because that way you make your own mixes and make sure to use 10 volume developer because your only going to deposit color and not lift. Always remember that after dyeing your hair its important to keep it hydrated especially your ends.
Even if your hair is naturally on the lighter side and you've never dyed it, you should still consider avoiding Sun-In hair product if looking into dyeing your hair professionally in the future. As explained by Bellatory, Sun-In makes hair more unpredictable, so your stylist won't be able to know the final product of the dye process. Unless you want rainbow brights instead of buttery blond.
According to the manufacturers of Sun-In, you can surely color your hair after using the hair lightener. Chattem Inc., the manufacturing company, also suggest waiting for at least 4 weeks to dye. It can still damage hair, but if bleach isn't involved, it's less likely.
Be sure to test a small section of hair first, to be safe, and use an intensive moisturizing leave. Yes, but you may have to use a darker/stronger colour than you would have otherwise. Bleach like sun-in damages your hair, which makes it either more/less likely to absorb dye.
Be careful with home dying after bleaching, because home dyes work with the natural pigments already in your hair, which bleaching may have removed.