How This Works
In CAS give your Sim the Lash Stylist trait located in the lifestyle category.
Set up your lash bar to include the All In One Styling Station. Use this to change the brow and lashes of your customers.
Also make sure the lash bar has a basegame computer (all in one power pc).
You can Open the lash bar, close it, and collect payments from the computer.
When you open it’ll spawn several customers. Closing will force them off the lot.
Use the social interactions to help customers with aftercare.