Cover - USD ($)	12 Months Ended
Cover - USD ($)	Dec. 31, 2025	Apr. 28, 2026	Jun. 30, 2025
Document Type	10-K/A
Amendment Flag	true
Amendment Description	On March 31, 2026, NexGel, Inc. (the “Company”) filed its Annual Report on Form 10-K for the fiscal year ended December 31, 2025 (the “Original Form 10-K”). This Amendment No. 1 (this “Amendment”) amends Part III, Items 10 through 14 of the Original Form 10-K to include information previously omitted from the Original Form 10-K in reliance on General Instruction G(3) to Form 10-K, which provides that registrants may incorporate by reference certain information from a definitive proxy statement involving the election of directors if such definitive proxy statement is filed with the Securities and Exchange Commission (the “SEC”) within 120 days after the end of the fiscal year. The Company is filing this Amendment to include Part III information in its Original Form 10-K because the Company will not file a definitive proxy statement containing this information before that date. The reference on the cover of the Original Form 10-K to the incorporation by reference of portions of the Company’s definitive proxy statement into Part III has been deleted. Except for the addition of the Part III information, the update to the cover page, and the filing of related certifications, this Amendment does not amend or otherwise update any other information in the Original Form 10-K. Accordingly, this Amendment should be read in conjunction with the Original Form 10-K.Except as specifically stated herein, this Amendment does not reflect events occurring after the filing of the Original Form 10-K and no attempt has been made in this Amendment to modify or update other disclosures as presented in the Original Form 10-K. In accordance with Rule 12b-15 under the Securities Exchange Act of 1934, as amended, this Amendment also contains new certifications by our principal executive officer and principal financial officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed as Exhibits 31.3 and 31.4 hereto. Because no financial statements are contained in this Amendment, and this Amendment does not contain or amend disclosures with respect to Items 307 and 308 of Regulation S-K, paragraphs 3, 4 and 5 of the Section 302 certifications have been omitted. In addition, because no financial statements are being filed with this Amendment, certifications pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 are not required and are not being filed herewith.
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2025
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2025
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			$ 11,032,723
Entity Common Stock, Shares Outstanding		8,849,665
Documents Incorporated by Reference [Text Block]	None
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Common Stock, par value $0.001
Title of 12(b) Security	Common Stock, par value $0.001
Trading Symbol	NXGL
Security Exchange Name	NASDAQ
Warrants to Purchase Common Stock
Title of 12(b) Security	Warrants to Purchase Common Stock
Trading Symbol	NXGLW
Security Exchange Name	NASDAQ

NEXGEL, INC. 10-K/A