擦拭

Pinyin: cā shì
Meaning：Cleanse; dab
Sentence：她用面巾擦拭嘴唇。She dabbed at her mouth with a tissue.

More:

擦：

Pinyin: cā
Meaning: Rub; wipe
Radical: 扌
Stokes: 17
Traditional: 擦
Common words/Phrase:
擦洗 [cā xǐ] 【scrub】
擦除 [cā chú] 【erasure】
擦伤 [cā shāng] 【scratch】
擦肩而过 [cā jiān ér guò] 【brush past】

拭：

Pinyin: shì
Meaning: Wipe; mop
Radical: 扌
Stokes: 9
Traditional: 拭
Common words/Phrase:
拭去 [shì qù] 【wipe】
拭抹 [shì mò] 【swab】
拭除 [shì chú] 【erase】
拭目以待 [shì mù yǐ dài] 【wait expectantly (for something to happen)】