What causes brassy blonde hair?

When hair is lightened, underlying warm pigments are exposed. Depending on how light the hair has been taken, some yellow or warm tones may naturally remain.

Over time, your blonde can also appear warmer due to several factors.

Sun exposure: UV exposure can affect the appearance of your colour and contribute to dryness.

Water: Minerals and metals present in water can build up on the hair and influence colour and condition.

Product build-up: Certain styling products and residues can make blonde hair appear dull.

Colour fading: Toners gradually fade, which can allow warmer underlying tones to become more noticeable.

How can you keep your blonde fresh?

Use suitable haircare. Choose products recommended for your hair type and colour.

Be mindful of sun exposure. Protect your hair when spending extended periods outdoors.

Don't overuse purple shampoo. Purple shampoo can help neutralise yellow tones, but using it too frequently may leave your blonde looking dull or overly cool.

Keep up with your salon maintenance. Your stylist can assess whether you need a toner, additional foils or a more complete blonde refresh.

Does your hair need a toner or more foils?

These are two very different things.

A toner or gloss adjusts the tone of your existing blonde, while foils are using lightener to lift your natural colour.

If your roots are showing, a toner alone won't make them blonder. Equally, if your blonde is already light enough but has become too warm, more lightening may not be necessary.