Annual report pursuant to Section 13 and 15(d)


Cover - USD ($)
12 Months Ended
Dec. 31, 2021
Mar. 21, 2022
Jun. 30, 2021
Document Information [Line Items]      
Document Type 10-K/A    
Amendment Flag false    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Dec. 31, 2021    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2021    
Current Fiscal Year End Date --12-31    
Entity File Number 001-36278    
Entity Registrant Name NexGel, Inc.    
Entity Central Index Key 0001468929    
Entity Tax Identification Number 26-4042544    
Entity Incorporation, State or Country Code DE    
Entity Address, Address Line One 2150 Cabot Blvd West    
Entity Address, Address Line Two Suite B    
Entity Address, City or Town Langhorne    
Entity Address, State or Province PA    
Entity Address, Postal Zip Code 19047    
City Area Code 215    
Local Phone Number 702-8550    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company true    
Elected Not To Use the Extended Transition Period false    
Entity Shell Company false    
Entity Public Float     $ 5,675,244
Entity Common Stock, Shares Outstanding   5,572,234  
Auditor Name Turner, Stone & Company, L.L.P    
Auditor Location Dallas, TX    
Auditor Firm ID 76    
Common Stock [Member]      
Document Information [Line Items]      
Title of 12(b) Security Common Stock, par value $0.001    
Trading Symbol NXGL    
Security Exchange Name NASDAQ    
Warrant [Member]      
Document Information [Line Items]      
Title of 12(b) Security Warrants to Purchase Common Stock    
Trading Symbol NXGLW    
Security Exchange Name NASDAQ