Think of it like brewing a cup of coffee - if you leave the coffee grounds in the filter for too long, the coffee is going to be bitter and undrinkable. Similarly, if you leave peroxide on your hair for too long, it can cause damage and dryness, especially if you have sensitive hair. On the other hand, if you don't leave it on for long enough, the color might not take properly, and you'll be left with uneven tones and a bad hair day.
The key is to find that sweet spot where your hair is fully processed, but not over-processed. It's a bit like trying to get the perfect golden brown on a slice of toast - it takes a little practice and patience to get it just right. And, just like how you wouldn't try to toast a slice of bread for an hour, you shouldn't leave peroxide on your hair for hours on end - 20-45 minutes is the max!
How Long To Leave Peroxide On Hair: Tips For Safe Lightening | ShunSalon
So, how do you know when it's time to rinse out the peroxide? Well, it's a bit like checking on a batch of cookies in the oven - you need to keep an eye on them to make sure they don't overcook. With peroxide, you can check on the processing time by doing a strand test - this will give you an idea of how long it takes for the color to develop and when it's time to rinse.
