Where Should You Use Instagram Hashtags – in the Post or Comments?
Including hashtags in the post resulted in 9.84% more Likes and 29.4% more Reach. Placing the hashtags in the comments resulted in 19.3% more comments for some strange reason.
Placing hashtags in the Instagram post resulted in 18% better content performance metrics. While this might seem like a slim margin, you must consider the extra time and steps it would take to go back and remember to add hashtags into your posts’ comments.
more on hashtags in this IMS blog
more on Instagram hashtags in this IMS blog