Segment Information and Revenue by Geography and Products - Summary of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Total net revenue	$ 231,270	$ 147,683	$ 181,712
Total product revenue
Disaggregation of Revenue [Line Items]
Total net revenue	205,703	125,113	158,638
Systems
Disaggregation of Revenue [Line Items]
Total net revenue	139,633	90,765	140,478
Consumables
Disaggregation of Revenue [Line Items]
Total net revenue	16,401	9,287	9,648
Skincare
Disaggregation of Revenue [Line Items]
Total net revenue	49,669	25,061	8,512
Service
Disaggregation of Revenue [Line Items]
Total net revenue	25,567	22,570	23,074
United States
Disaggregation of Revenue [Line Items]
Total net revenue	96,629	61,238	106,372
Japan
Disaggregation of Revenue [Line Items]
Total net revenue	70,235	43,265	24,143
Asia, excluding Japan
Disaggregation of Revenue [Line Items]
Total net revenue	12,649	10,707	14,414
Europe
Disaggregation of Revenue [Line Items]
Total net revenue	19,444	11,185	11,937
Rest of the world, other than United States, Asia and Europe
Disaggregation of Revenue [Line Items]
Total net revenue	$ 32,313	$ 21,288	$ 24,846