When drying your hair, you wave the dryer to the left and the right as you ensure that all of your hair is dried. This is a shape that looks like it should be waved back and forth.

髪を乾かす時はドライヤーを左右に振って髪にまんべんなく風が当たるようにします。 前後対称でふりふりしやすそうなかたちです。