今注目を集めている How Long Do I Leave Semi Permanent Hair Color Inについて、多角的な視点をご紹介しています。

Don’t use hot water to rinse! Hot water opens cuticles—and pushes color out. Use cool water. It’s less comfy, but your hair will reward you with longer-lasting vibrancy.

Also, don’t shampoo for 24–48 hours after dyeing. Let the color settle in. Wash it too soon, and you’re literally washing your money down the drain.