Abstract: A sweat collector for wearing on a user's head to collect sweat from the user's head and prevent the collected sweat from running into the user's eyes. The sweat collector is at least partly made of nonabsorbent material. The sweat collector comprises a sweat-collecting recess between its inner and outer sides for collecting sweat. The sweat-collecting recess may be configured to retain the collected sweat by surface tension and adhesion. Other types of sweat collectors for collecting sweat from other body parts (e.g., a forearm) are considered. Other types of liquid collectors for collecting liquid other than sweat are considered (e.g., water on a user's head or other body part originating from a bath, pool or other external source; bottled liquid; etc.).