Color without mystery: Myths and truths about coloring hair

Feel like changing your look, but scared to death of everything you've heard about hair dye? Rest assured: with some care, you can keep your hair healthy even by coloring the strands frequently. Donna listed 10 questions about coloring and spoke with dermatologists Márcio André Volkweis, from Clínica Leger (Porto Alegre), and Ana Carina Junqueira, specialist in medical tricology at Clínica Groenlândia 462 (SP). View here for more info: color melt hair

Does the dye weaken the hair?

Yes. In essence, the dyes corrode the surface layer of the strands – which, over time, leaves the hair drier, opaque and more brittle. The more radical the color change and the longer the exposure time to the product, the greater the risk of weakening the hair. Therefore, give colorants and dyes without ammonia a chance: if these products last less, it is precisely because they are less aggressive.

Does light hair suffer more from the dye?

Yes. That's because blond hair – followed by red and lastly, dark strands – are naturally thinner and prone to dry out. In other words: dye tolerance is not about color, but about the "identity" of the threads.

– The big issue with coloring is to adapt the dye to the type of hair: analyze the thickness of the hair, whether the hair has already been dyed, whether there are other types of chemistry associated with it – explains dermatologist

Ana Carina Junqueira.

From this examination, the professional can determine the best product and the frequency of coloring.

Is there an ideal frequency for coloring your hair?

No. The hair's own growth usually determines the frequency of coloration. Again, to avoid problems, it's important to consider your hair type and your chemistry history.

– Generally, we recommend waiting at least a month until the next application – says Ana Carina. – Very short intervals are only for thick hair, which better tolerates corrosion by the ink.

Can coloring frequently lead to hair loss?

No. The fall is due to changes in the hair root, and the chemical substances in the dye act on the hair shaft.

– Of all the aesthetic hair treatments, dye is still among the least aggressive – says dermatologist Márcio André Volkweis.

What can happen is the breakage of entire locks due to the accumulation of chemical procedures (when the dye is added to straightening or progressive brushing, for example).

Does coloring hair generate more split ends?

Yes. The split end is the effect of dryness. By removing the outer layer of the threads, the dye makes them more vulnerable to this nuisance. To strengthen the hair, the way is to perfect the hydration.

Is there a right age to start coloring your hair?

No. In puberty, the hairs reached the peak of their development and maturation. The problems that can result from the dye are the same that any adult woman faces. Professionals recommend, however, postponing the color as much as possible to preserve the hair.

Can I use regular shampoos after coloring my hair?

No. As the dye dries the threads, give preference to mild shampoos combined with a good after-bath hydration.

Does discoloration make hair thinner?

Yes. Discoloration alters the structure of the threads and greatly increases the chances of breakage and the dreaded chemical cuts. The process is so aggressive that, for those with dark strands, it is difficult to let them grow:

Is it common for the dye to cause allergies?

Yes – and ammonia dyes are especially prone to this risk. The best way to avoid inconvenience is to test the product on a lock and observe how the scalp reacts. Ana Carina also recommends applying argan oil or even olive oil on the threads 20 minutes before dyeing. These substances form a protective layer between the scalp and the ink.

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