Hairdressers use a magic number called “levels.” Level 1 is black, Level 10 is platinum. Dark brown is around Level 3 or 4. Light brown is Level 5 or 6. That’s a huge leap!
Each level jump requires a chemical reaction. It’s like climbing a mountain—you can’t skip steps. If you try to go too fast, your hair breaks. Literally. Snap.
Pro tip: If you DIY, use a 20-volume developer. Anything stronger is for pros who wear gloves and lab goggles. You don’t want a science accident on your head.
