You can clear many font formats at once (such as bold, underline, italics, color, superscript, subscript, and more) from your text and return it to its default formatting.
Clear formatting from text
Click the slide you want to edit, and select the text that has the formatting you want to clear.
On the Home tab, in the Font group, click Clear All Formatting .
Note: This action applies only to formatting that you have added or modified. It will not apply to default page layout styles, such as slide headers or bullet styles, that you have not modified.