<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
Why is it so difficult for women to apply mascara with their mouths closed?
<|assistant|>
It's difficult for women to apply mascara with their mouths closed because the formula can clump or smudge as the woman swallows or moves their head. This occurs because the brush can become contaminated while the woman is talking, eating or drinking, leading to a streaky or blurry application. Additionally, the brush may also get caught in the user's teeth and/or lips when the mouth is shut.