Oxytocin tattoo, the love hormone
The Fabric of Life II by d1sarmon1a on DeviantArt
This would make a cool tattoo :)
Instagram media by bluamaranth - Watercolor DNA, serotonin, and dopamine molecule tattoo. Very fortunate to be able to do something like this that means so much to someone.
serotonin tattoo (= happiness/satisfaction)
51 Watercolor Tattoo Ideas for Women