Old skin cells drop off, and this helps remove bacteria that have stuck to the skin.
oʊ l d WORD_BOUNDARY s k ɪ n WORD_BOUNDARY s ɛ l z WORD_BOUNDARY d ɹ ɑ p WORD_BOUNDARY ɔ f WORD_BOUNDARY æ n d WORD_BOUNDARY ð ɪ s WORD_BOUNDARY h ɛ l p s WORD_BOUNDARY ɹ ɪ m uː v WORD_BOUNDARY b æ k t ɪ ɹ i ə WORD_BOUNDARY ð æ t WORD_BOUNDARY h æ v WORD_BOUNDARY s t ʌ k WORD_BOUNDARY t ə WORD_BOUNDARY ð ə WORD_BOUNDARY s k ɪ n WORD_BOUNDARY