Does straightening your hair harm your health?

Does straightening your hair harm your health?

Hair straightening treatments are only safe for your health when they do not contain formaldehyde in their composition, such as formaldehyde-free progressive brushing, laser straightening or hair lifting, for example. These straightening treatments are identified by Anvisa as ethical straightening treatments and do not contain the substance formaldehyde, which can cause burns, hair loss and […]

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