Salonist does not have a separate Refund button. If you need to reverse a transaction, you can cancel the invoice and record the reason for cancellation in the Comments section.
How to cancel an invoice
Open the relevant invoice.
Select the Cancel Invoice option.
Enter the reason for the cancellation in the Comments section.
Confirm the cancellation.
Note: When a product invoice is cancelled, the items from that invoice are automatically returned to the inventory stock.