Última atualização em 28 de setembro de 2021 por Chauncey Morgan

O cabelo loiro ficando amarelo, e um tom de amarelo muito desagradável, é um problema muito comum. Você deixa o seu cabeleireiro com lindos e caros reflexos louro champanhe… algumas semanas ou até dias depois eles parecem amarelos, atrevidos e baratos. Mas o que está causando o cabelo amarelado e amarelado?

Existem duas razões principais pelas quais o cabelo loiro fica amarelo. A primeira é que o toner usado para obter tons acinzentados, arenosos e champanhe se desvanece. Isso faz com que os pigmentos amarelos no cabelo sejam visíveis novamente e, se você tiver cabelos mais escuros, tons acobreados.

A segunda razão é que o cabelo loiro tende a ser mais poroso. Com o tempo, absorve coisas como minerais em água e produtos. Isso leva à descoloração. Por exemplo, o cabelo loiro ficando verde acontece por causa do cloro nas piscinas.

Se você quiser evitar cabelos acobreados, lembre-se das seguintes causas para cabelos amarelos em loiras.

Água dura: use um filtro de chuveiro

A água da torneira geralmente tem grandes quantidades de minerais e metais que podem deixar o cabelo loiro amarelo. A água dura é a pior para manter seu cabelo loiro luminoso e brilhante. Mas isso tem uma solução fácil.

Existem sistemas de filtragem inteiros que se conectam ao abastecimento de água em sua casa para purificar toda a água da torneira. Mas são muito caros. Em vez disso, você pode comprar um filtro de chuveiro da Amazon que se conecta ao seu chuveiro. Eles são uma maneira econômica de melhorar a qualidade da água do seu chuveiro e manter sua cor bonita por mais tempo.

Swimming Pools Chlorine: Soak Your Hair First

The chlorine in swimming pools, or even the salt in the ocean, can totally change the color of your hair. If you want to avoid your blonde hair turning yellow, or even worse, green, it pays to be prepared.

Lightened blonde hair is porous, which means it will absorb water from the pool and suffer from discoloration. So before you jump in, soak your hair in fresh water so it doesn’t absorb too much water. And once you are out of the pool, rinse your hair as quick as possible. Chlorine can play havoc with the toner in your hair and send your expensive dye job on its way in just one day at the pool.

For extra insurance, products such as swimcap by Philip Kingsley do an even better job of protecting your blonde hair from sun and water damage. Even applying a bit of conditioner after soaking your hair with fresh water will protect your hair color.

Shampoo: Wash Less, Wash Better

Washing your hair strips color pigments. This is great if you are fixing a dye job gone bad, and terrible if you just paid for blonde hair. If you want your hair color to last, it pays to wash your hair less and with the right shampoo.

If you have dyed your hair silver or platinum blonde, your hair should also be much less greasy. This means you can make your blowouts last longer, and keep the color of your hair in shape, by using dry shampoo.

However, if you hate the idea of not washing your hair, consider co-washing with a sulphate free product. Or invest in a color depositing shampoo to neutralise the yellow. At the very least, a sulphate free shampoo for dyed hair will help your blonde last longer.

Purple Shampoo: Use It Right

So, I just recommended purple shampoo above to keep your blonde hair from going yellow. And now I am warning you about it? The truth is, overusing purple or blue color depositing shampoo can be as bad as using tap water. Too much violet pigment and your hair can go from champagne to dull and grey looking.

Using purple shampoo or conditioner (or a purple conditioning mask) once a week is often enough to keep brassy hair away. When your color is fresh, you will need less time and less product. As the toners on your hair fade, leaving the mask or conditioner longer will help cancel unwanted yellow tones.

If you are a brunette with blonde highlights, choose a blue shampoo or conditioner instead of purple. Blue cancel orange and brassy hair much better than purple. Purple shampoo cancels yellow, so it works great for cool toned and neutral blondes.

Lightening Products: Keep Your Hair Healthy

One of the most common problems with committed blondes is that, over time, their hair color seems to go yellow quicker. This is particularly true if you use at-home dyes, bleach your hair yourself or go more than two levels higher than your natural home color.

Yellow hair in this case happens because hair is not healthy enough to take another lighting session. Hair is extra porous and dye washes off quicker and quicker as it has nothing to hold to. You may also notice that your hair color catches much quicker on the tips of your hair than the roots.

Another possible cause of yellow hair is at-home lightening shampoos and conditioners. While they can be used safely to lighten natural blonde hair, they play havoc with hair dye and toner. Once the toner washes out, you are left with brassy blonde hair. Not ideal!

To avoid this, it’s better to accept that blonde hair means high maintenance and invest in hair care. Always use conditioners and hair masks that repair hair and help seal the cuticle to ensure your blonde color last for longer.

If you bleach your hair at home, avoid overlapping bleach on already lightened areas. Alwasys apply dye to the roots first, and wash it down to the tips after the required time. This is because roots (being virgin hair) will not only process quicker, but absorb dye differently than your more porous tips.

Brassy Hair Still There? Gloss Monthly

If your hair has brassy or yellow tones after avoiding all of the above, a gloss is the way to go. A glossing treatment once a month will seal the cuticle and refresh the color, without actually dying your hair. If your color looks off the right gloss can be used to cancel unwanted yellow or orange undertones without damaging hair.

Regular glossing will close the cuticle and prevent hair color from bleeding out, keeping your color blonde for longer. If you only want the extra shine, choose a clear gloss to add shine without modifying your original color. And choose an at-home glossing treatment if you don’t have the time or budget to go to the hairdresser.

Como você pode ver, há muitas coisas que você pode estar fazendo acidentalmente que tornam seu cabelo loiro amarelo ou acobreado. Mantê-los em mente é a chave para fazer seu cabelo loiro parecer saudável e caro por mais tempo. São pequenas mudanças na sua rotina que vão lhe poupar dinheiro, já que você vai precisar ir ao cabeleireiro com menos frequência para manutenção.

Encontre todos os nossos conselhos de cores e gráficos de cabelo aqui!

Que outras dicas você tem para evitar o cabelo acobreado como loira ou morena?