When you add hashtags to the description for a new Pin, Pinners can visit a feed of all the Pins that share that hashtag. To learn more about what hashtags are and how to add them to your Pins, visit this article.
When inserting a hashtag, we recommend you be specific and descriptive. Use words or phrases that describe the content in the Pin – we recommend you add no more than 20 hashtags per Pin. It’s best to be objective and use hashtags that make sense and are relevant to the Pin. Depending on your Pin, consider using hashtags that are timely (e.g. #oscars, #backtoschool, #halloween) and/or hashtags for evergreen content that works well on Pinterest (e.g. #mealplanning, #hairgoals, #homedecor). This is to help make it easier to for users to filter and find relevant content they are interested in.
Hashtags are a new way to reach users interested in your content. When a user searches a hashtag the freshest pins with that hashtag will appear at the top of the feed. When a user searches the same phrase without the hashtag, it will pull up the original search results page.
Right now we won’t show any Promoted Pins in hashtag feeds, but adding hashtags to the organic instances of your Promoted content can help distribute your content in those feeds.