Shower caps, or bath caps, are specialized hats for keeping hair from getting wet while bathing or showering. Moisture and wetness can cause untameable frizz, and some hair styles need careful attention to hold their shape around water. Using a shower cap can keep your hair in place. Both fabric and plastic shower caps are popular and typically reusable, giving you a great way to keep your hairstyle in place while getting dressed or when pulling your hair off of your face while filming your next makeup tutorial.