v3.26.1
COVER - shares
 6 Months Ended
Jun. 30, 2026
Jul. 31, 2026
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Document Transition Report false  
Entity File Number 001-38529  
Entity Registrant Name Verrica Pharmaceuticals Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 46-3137900  
Entity Address, Address Line One 44 West Gay Street  
Entity Address, Address Line Two Suite 400  
Entity Address, City or Town West Chester  
Entity Address, State or Province PA  
Entity Address, Postal Zip Code 19380  
City Area Code 484  
Local Phone Number 453-3300  
Title of 12(b) Security Common Stock, $0.0001 par value  
Entity Trading Symbol VRCA  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   17,178,786
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2026  
Current Fiscal Year End Date --12-31  
Amendment Flag false  
Central Index Key 0001660334