How Long Does Semi-Permanent Hair Dye Last? Full Guide
Semi-permanent hair dye typically lasts between 4 to 6 weeks, which equates to roughly 15 to 24 washes. The exact duration depends heavily on your hair’s porosity, the vibrancy of the chosen colour, and your daily hair care routine. Fading occurs naturally with every wash, but using cold water and sulfate-free products will significantly extend … Read more