How to Color Black Hair Red Without Bleach

簡単にわかる! How to Color Black Hair Red Without Bleachの導入方法をロジカルに解説します。

Do not wash your hair the day you dye it. Your scalp’s natural oils protect it from irritation. Wash it 24 to 48 hours before, and use a clarifying shampoo (like one you’d use after a beach trip) to strip away any product buildup. This opens the cuticles so the red dye can sneak in.

If your hair is greasy, sigh, you can dry shampoo it. But seriously, wait until your hair is dry before dyeing. Wet hair repels color like a raincoat.

Step 2: The “I’m a Scientist” Mixing Phase

Put on those gloves—you don’t want Red Hand No. 5 for the next week. Section your hair into four parts: top, back, left, right. Like you’re about to launch a hair rocket. Mix the dye according to the box instructions. For extra oomph, add a dollop of red food coloring to the dye. Yes, really. It intensifies the pigment.

Just a tiny drop, though. You’re not making soup.