Usage Note
Glätten means to make flat and smooth — die Haare glätten = to straighten the hair with a flat iron. Also used for ironing out skin wrinkles in cosmetics copy.
Examples
"Sie glättet ihre Haare jeden Morgen mit dem Haarglätter."
Natural Translation
She straightens her hair every morning with the hair straightener.
Literal Translation
She straightens her hair every morning with the hair straightener.

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