00:00It's humid outside, and your perfect hair turns into a frizz ball within minutes?
00:04You're not imagining it.
00:06And here's the real science behind every bad hair day.
00:12Your hair is made of a protein called keratin, and keratin acts like a tiny sponge.
00:18Every single strand constantly soaks up moisture from the air around you.
00:25On a humid day, your hair absorbs that extra moisture and swells up.
00:30The water slips inside and breaks the hydrogen bonds, the tiny links holding your hair's shape together.
00:38Then those bonds reform in new, random positions as your hair dries.
00:44Straight hair curls up, waves go wild, and frizz takes over completely.
00:51Same science behind every bad hair day you'll ever have.
00:55Ever noticed your hair changing on vacation?
00:59Tell me where you were.
