Add on for spray tanning?

[Sunflowerspray]

Hi
What would you train in , if you wanted to add on to a spray tanning business??
I’m going to have to train but interested in your suggestions, I live in Herts .

 

[HMC]

Alongside spray tanning, I most commonly see:
Nails
Lash extensions
Makeup, Hair - styling/for events

If you think about your current clients, do they also go elsewhere for their nails, or for their lashes? That might give you an idea of what they are looking for.