Do a slight backcomb at the crown to conceal the more visible part of the unwashed hair.

在头顶稍稍向后梳一下，遮住没洗过的头发中比较显眼的部分。

The best option would be to slightly backcomb the hair at the roots to get extra volume, and then secure it in a shell or a bun.

最好的办法是将发根处的头发稍稍向后梳，让头发更蓬松，然后把它扎成发髻。