That said, it wasn't too powerful and didn't leave our tester's hair too cool ... the color looked; her hair felt softer, more moisturized, and even shinier than it had with other purple shampoos.

Color-depositing shampoos add specific pigments (either purple, blue or green) onto the hair shaft to maintain ... This Amika shampoo, which is suitable for cool blondes, platinum blondes, grays ...

With Pinterest searches for ‘lilac hair’ sky-high ... neutralises any hint of yellow so the purple dye you follow with looks as cool-toned and colour-true as possible. Sapphire Driver ...

While a hydrating shampoo is pretty much always a good idea, this anti-brass purple shampoo is perfect for icy-blonde hair ...

This brightens old hair dye and boosts its undertones ... Much like the aforementioned Fudge option, this purple hue packs a serious punch, leaving blonde cool, icy and fresh looking.