Redken’s Shades EQ Demi Permanent Hair Colour Red Kicker is one of the best hair colour changers around and lasts for up to 28 washes. Called “demi-permanent” rather than “semi-permanent”, it’s ammonia-free and pH balanced for reliable, even colour without the harsh chemicals. The high-shine-giving liquid formula is perfect to gloss, refresh, tone and correct with no lift in as little as 20 minutes, making it ideal on days when you really need a quick refresh but don’t have much time.