Noncontrolling interest - Summary of ownership interests in EWC Ventures LLC on equity (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 25, 2022	Jun. 25, 2022
Minority Interest [Line Items]
Net income attributable to European Wax Center, Inc.	$ 968	$ 2,853
Decrease in additional-paid-in-capital as a result of equity allocations to the noncontrolling interest	(4,095)	(2,946)
Net increase in equity of European Wax Center, Inc. due to equity interest transactions with noncontrolling interests	$ (5,063)	$ (5,799)