In more detail
Hashtag challenges turn an audience into participants. A brand or creator sets a task (a dance, a recipe, a transformation, a duet) and ties it to one searchable hashtag, then others copy it, remix it, and post their own versions. Because every entry is public and tagged, the hashtag becomes a feed people can browse, and the campaign spreads through participation rather than paid ads. They are most common on TikTok and Instagram Reels, where short video and a strong sound or format make the challenge easy to imitate.
Example
A skincare brand launches #GlowUpIn7 and asks users to post a 7 day before and after clip using a specific song. If 2,000 people join and each video reaches a few hundred viewers, the brand gets exposure to hundreds of thousands of people without buying that reach directly.
FAQ
