Your hair's porosity plays a huge role in how well the color takes. If your hair has low porosity, the color molecules will have a harder time getting in, and you'll end up with lighter roots. It's like trying to get water into a super-fine mesh - it just won't absorb as well. On the other hand, if your hair has high porosity, the color will soak in like a sponge, giving you a more even tone.
Now, let's get into the nitty-gritty of hair growth. As your hair grows out, the cuticle layer on your roots is more compact than on the rest of your hair, which affects how the color is absorbed. It's like the difference between a smooth, shiny surface and a rough, rocky terrain - the color will adhere differently to each one.
But here's the thing: it's not just about the science - it's also about the art of hair dyeing. Sometimes, even with the best products and techniques, your roots can still end up lighter. It's like the hair equivalent of a magic trick - you can't always predict the outcome, but that's what makes it so fascinating.
How I Lighten My Hair and Roots and Home │ How I Color My Hair to Light
