This WordPress blogger I came across — let’s call him “John” for now — has a very peculiar way of testing out his looks. Using dating-apps like Tinder,
John conducted A/B-tests to find out whether people would prefer him romantically with or without a beard.
John with beard (via https://appsciencing.wordpress.com/) 
John shaven (via https://appsciencing.wordpress.com/)
Via a proper experimental setup, John found out that bearded John receives much more attention in the form of Tinder matches. However, not from girls whom John characterized as being asian, that group seemed to prefer shaven John.
Tinder matches for bearded John by race (via https://appsciencing.wordpress.com/) 
Tinder matches for shaven John by race (via https://appsciencing.wordpress.com/)
While the sample size was not too large (Nbearded = 500; Nshaven = 500) and the response rate even lower (Nbearded = 64; Nshaven = 30), this seems like a fun way to make your look more data-driven!
Read more on “John”‘s orginal blog below:
https://appsciencing.wordpress.com/2018/11/19/beard-studies/
paulvanderlaken.com 