Place the shoes in a warm, sunny, and dry location to dry. Doing so speeds the process up and helps to heighten the whitening effect.  The dry warmth of the sun can help dry the shoes faster, and the light of the sun actually has a mild bleaching effect. Do not use a dryer. Machine drying white Converse will result in the shoes losing their shape.

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Write a summary of the previous text in Vietnamese:
Hong khô giày.