

How to touch up highlights at home?
Hii! I’m looking for some advice to touch up my own highlights at home since going to a salon every few months is getting too expensive.
I have done my highlights at home before, but they ended up looking horrible (second picture). Since then I got them fixed at a salon and they look nice now, but my dark roots are starting to show.
Does anyone have advice on how I can prevent them from looking like the second picture? And what products should I buy? I can only find box dyes in my local stores where I have to use all of the product at once. I’ve seen YouTube videos where they have bigger containers with the bleach and powder where they can mix the amount of product to their needs. However, I can’t seem to find such products online.
Any advice is appreciated! :)