Understand Your Hair

Signs, characteristics and differences between dryness, damage, buildup and other conditions noticed in the hair.

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Mulher observa entre os dedos uma mecha de cabelo molhada e esticada em um banheiro.

Understand Your Hair28/09/20265 min read

Stretchy hair when wet: what it may indicate and what home tests cannot prove

Wet hair naturally becomes more flexible, but extreme stretchiness with breakage may point to a weakened hair fiber. Learn why home tests cannot diagnose porosity, protein deficien...

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Mulher de cabelo loiro descolorido segura uma mecha fina e esticada entre as mãos diante do espelho do banheiro.

Understand Your Hair14/09/20267 min read

Gummy hair after bleaching: how to spot loss of strength and what to stop first

Learn the signs of overly stretchy hair after bleaching, what to stop immediately, how to limit breakage, and when to seek professional help.

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Close-up de cabelo castanho molhado sob chuveiro cromado com incrustações brancas de minerais, enquanto uma mão toca os fios.

Understand Your Hair30/08/20268 min read

Hard water and hair: how to recognize mineral buildup and when a chelating shampoo makes sense

Hard water can leave calcium and magnesium on hair, but the signs are not specific. See how to test the water and choose between regular, clarifying and chelating shampoo.

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Fio de cabelo sobre a superfície da água em um copo, representando o teste caseiro usado para estimar a porosidade capilar.

Understand Your Hair08/08/20266 min read

Does the cup test for porosity work? What it measures poorly and what to watch instead

The cup test is popular, but it does not reliably measure porosity. Understand why the wire may float or sink and which signs are most useful.

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Três mechas de cabelo com diferenças visuais de textura, brilho e peso, representando ressecamento, dano da fibra e acúmulo de produtos.

Understand Your Hair08/08/20268 min read

Dry, damaged or accumulated hair? A script of signs before changing your routine

Before changing your entire routine, look at texture, weight, breakage, chemical history, and response to washing to separate dryness, fiber damage, and buildup.

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