Warm tones in blonde hair do not necessarily mean the colouring was done incorrectly. After lightening, the hair retains its natural underlying pigment, while the neutralising pigment gradually washes out.
What Makes the Shade Change Faster
Frequent washing, hot water, sun exposure, swimming pools, high temperatures from styling tools and mineral deposits in water can all affect the colour. Porous ends lose their toner faster, so the blonde can become uneven.
Even a carefully chosen cool shade will not stay the same forever. The lighter and more porous the hair, the more attentive you need to be with your at-home care.
How to Keep Blonde Hair Clear
Cleanse Gently
Use a shampoo that does not strip away too much of the hair's natural oils, and rinse out product thoroughly.
Protect from Heat
Apply heat protectant before blow-drying or using hot tools, and choose a moderate temperature setting.
Use Pigment in Moderation
Use purple products only when unwanted warmth actually appears, rather than all the time.
Refresh Your Toner
When blonde hair looks dull and uneven, professional toning can help restore its depth and shine.