Hashtags refers to the usage of the pound or number symbol, “#,” to mark a keyword or topic on social media. Hashtags originated on Twitter and have since become common on Instagram, Facebook and other social media platforms. Hashtags can attract a audience that you didn’t know existed if you use it properly.
Hashtags can help you find resources and help others find you. When I am seeking a specific service I always search via hashtags, For example, if you need a photographer for a upcoming event or project, you can use hash tags like #ChicagoPhotography #Travelingphotographer #professionalcameraman any creative combination of words can help you on your search.
How to hashtag:

A hashtag should contain only one word without spaces.
-
If you put any spaces between the words the search will be unsuccessful. Ex: #chicagophotography not #chicago photography
No punctuation should be included.
-
As I mentioned before words should be inserted as one word.
-
#chicagophotography not #chicago!Photography2
Include the hashtag within or after your message.
Hashtags should coincide with the message or photo that is being displayed. The hashtag should relate to what is being displayed so that it can target a audience that may be interested so when the hash tag is being searched, your content will be easier to find. For a example, a hair stylist may use hash tags like: #chicagonaturalhairstylist #chicagobraider #chicagomircolinks #chicagoKnotlessBraids #ChicagosewIn. Chicago in the hashtag helps attract a Chicago audience and adding the actual service right after helps attract potential customers searching for that particular style in Chicago.
Make sure your accounts are public.
Otherwise the hashtagged content you write won’t be seen by any non-followers.
Using relevant and specific hashtags are important . If it is too obscure, it will be hard to find and it won’t likely be used by other social media users. Hashtagging helps people discover you and your services/products. Including hashtags in your posts means taking part in a conversation happening on that social media platform. And most importantly, it makes your posts visible in that conversation. This can lead to greater engagement, boosting your brand’s social media engagement through likes, shares, comments, and new followers.