This shampoo will keep blonde hair looking amazing between salon visits

© Alexthq - Getty Images Banish brassy tones without the use of SLS chemicals for only £12. Read on to see what the GHI thought of Beauty Works' anti-yellow shampoo.

If you have bleached hair, you'll know it's often quite high maintenance, requiring regular salon trips to keep roots in check, a moisturising product to help prevent dryness and, most importantly, an anti-brass shampoo to keep the colour looking its best.

Tricky in the current climate, so we could do with a helping hand to keep our highlights looking salon-fresh for longer.

Luckily, toning shampoos do just that. They are typically blue or purple in colour and work to neutralise the yellow or more orangey tones that can arise.

And the Good Housekeeping Institute, our go-to for consumer testing, has rounded up their 10 best anti-brass shampoos for blondes and, if you're concerned about sulphates in your beauty products, you might be interested to know that Beauty Works' anti-yellow shampoo has come in as the highest-scoring sulphate-free option.

© Beauty Works Online Anti Yellow Shampoo 200ml

Shop Now

What are sulphates?

Like most shampoos, the majority of anti-brass options have sulphates like sodium laureth sulphate and sodium lauryl sulphate (SLS) in their ingredients list. These are surfactants used in personal care products like shampoos, toothpastes and shower gels to remove grease and create a lathering effect.

In recent years, however, these chemicals have developed a bit of a bad reputation. While the science says that sulphates are completely safe to use, they are made from petroleum, which is a non-renewable source – so they don't have the best environmental credentials.

What's more, the lathering effect we all know and love is actually unnecessary, as it doesn't impact on how well the product works.

As a result, a lot of brands now offer a range of health and beauty products that don't use these chemicals.

Going back to the winning Beauty Works product, this sulphate free purple shampoo earned an impressive score of 81/100. It's £12.59 for a 200ml bottle and it has a sweet fruity scent. Sunflower extract and vitamin F also work to leave the hair feeling stronger and healthier.

You only have to use the shampoo for two minutes to see effects (any longer and you may experience purple staining) and the majority of testers saw improvements in their hair's colour in just a single wash.

Testers were impressed with how it drew out the complex variety of blonde tones in their hair, making their tresses more vibrant while reducing brassy tones. This neutralisation effect was particularly evident in cooler blonde and silvery shades – making it a good choice for grey hair too.

You can pick up one of these shampoos from Lookfantastic here.