What It Does As Gibson explains, demi-permanent dye contains minimal levels of peroxide to allow the color to penetrate the shaft to an extent, but without the need of ammonia. The ammonia-cost-free components causes it to be gentler to the hair than permanent dye, but significantly less very long-Long lasting. https://bookmark-rss.com/story20435727/miami-hair-colorist-can-be-fun-for-anyone