Segment Reporting - Summary of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Total net revenue	$ 58,014	$ 49,668
Total product revenue
Disaggregation of Revenue [Line Items]
Total net revenue	52,066	43,551
Products
Disaggregation of Revenue [Line Items]
Total net revenue	36,514	28,320
Consumables
Disaggregation of Revenue [Line Items]
Total net revenue	3,903	2,925
Skincare
Disaggregation of Revenue [Line Items]
Total net revenue	11,649	12,306
Service
Disaggregation of Revenue [Line Items]
Total net revenue	5,948	6,117
United States
Disaggregation of Revenue [Line Items]
Total net revenue	24,474	18,948
Japan
Disaggregation of Revenue [Line Items]
Total net revenue	17,503	16,555
Asia, excluding Japan
Disaggregation of Revenue [Line Items]
Total net revenue	3,609	1,989
Europe
Disaggregation of Revenue [Line Items]
Total net revenue	4,191	5,001
Rest of the World, other than United States, Asia and Europe
Disaggregation of Revenue [Line Items]
Total net revenue	$ 8,237	$ 7,175