About health #bluelight:

The #bluelight hashtag is a topic or interest in health channel. Sort #bluelight hashtag by Trending, Trending in 2019, and Newest. If you don't want to appear in Snapchat #CasualEncounter, remove the hashtag in your People Discovery Engine settings. You can add up to 3 hashtags to your post by adding in your post title. Using the app you can add a hashtag by tapping the hashtag button.