Timing is everything, folks! If you leave the dye on for too short a time, the color might not deposit evenly, leaving you with a lackluster result. On the other hand, if you leave it on for too long, you risk over-processing your hair, which can lead to dryness, damage, and a whole lot of frizz.
So, how do you know what's just right? Well, it's kind of like goldilocks - you need to find the sweet spot that's not too hot, not too cold, but just right. If you're using a semi-permanent dye for the first time, it's always better to err on the side of caution and start with a shorter processing time, then gradually increase as needed.
Another thing to consider is the porosity of your hair. If your hair is particularly porous, it might absorb the dye faster, so you'll want to keep an eye on the clock. Think of it like a sponge - if it's super absorbent, it'll soak up all the color in no time, but if it's a bit more resistant, it'll take longer to penetrate.
