Condensed Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Operating expenses:
Research and development	$ 1,648	$ 1,365	$ 3,326	$ 4,016
General and administrative	6,248	803	9,715	2,018
Revaluation of contingent royalty obligation payable to Evolus Founders, a related party	8,200	0	9,100	0
Depreciation and amortization	4	107	4	218
Total operating expenses	16,100	2,275	22,145	6,252
Loss from operations	(16,100)	(2,275)	(22,145)	(6,252)
Other expense:
Interest expense, net	321	1	428	2
Loss before taxes	(16,421)	(2,276)	(22,573)	(6,254)
Income tax expense	12	20	22	40
Net loss	(16,433)	(2,296)	(22,595)	(6,294)
Comprehensive loss	$ (16,433)	$ (2,296)	$ (22,595)	$ (6,294)
Net loss per share, basic and diluted (in dollars per share)	$ (0.69)	$ (0.14)	$ (1.03)	$ (0.38)
Weighted-average shares outstanding used to compute basic and diluted net loss per share (in shares)	23,687,866	16,527,000	21,961,576	16,527,000