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Subsequent Events (Details) - USD ($)	Mar. 15, 2019	Feb. 01, 2019	Dec. 14, 2017
Evolus, Inc.
Subsequent Event [Line Items]
Due to related parties			$ 1,600,000
SCH \| Evolus, Inc. \| Subsequent Event
Subsequent Event [Line Items]
Up-front payment upon obtaining FDA approval		$ 9,200,000
One-time bonus payment		1,600,000
Daewoong \| Evolus, Inc. \| Subsequent Event
Subsequent Event [Line Items]
Up-front payment upon purchase agreement		2,000,000
Applicable Rate \| Term Loan Facility \| Subsequent Event
Subsequent Event [Line Items]
Default interest rate	5.00%
Chief Medical Officer \| Evolus, Inc. \| Subsequent Event
Subsequent Event [Line Items]
Due to related parties		$ 700,000
Term Loan Facility \| Subsequent Event
Subsequent Event [Line Items]
Maximum borrowing capacity	$ 100,000,000.0
Interest rate on debt	9.50%
Period of agreement of interest payments	36 months
Amortization period	23 months
Additional period of agreement of interest payment	12 months
Total term of debt	48 months
Additional amortization period	11 months
Percentage of final payment of full principal amount	5.50%
Percentage of final payment of full principal amount, next twelve months	3.00%
Percentage of final payment of full principal amount, year two	2.00%
Percentage of final payment of full principal amount, thereafter	1.00%
Term Loan Facility \| Term Loan Facility, Tranche One \| Subsequent Event
Subsequent Event [Line Items]
Maximum borrowing capacity	$ 75,000,000.0
Term Loan Facility \| Term Loan Facility, Tranche Two \| Subsequent Event
Subsequent Event [Line Items]
Maximum borrowing capacity	$ 25,000,000.0
Term Loan Facility \| LIBOR \| Subsequent Event
Subsequent Event [Line Items]
Basis spread on variable rate	7.00%