ORGANIZATION AND DESCRIPTION OF BUSINESS - Narrative (Details)				3 Months Ended
	Jul. 01, 2025 USD ($) investor $ / shares shares	Feb. 21, 2024 USD ($) $ / shares shares	Feb. 15, 2024	Mar. 31, 2026 product $ / shares shares	Dec. 31, 2025 $ / shares shares	Jun. 30, 2025 USD ($) shares	Apr. 16, 2025 USD ($) lender	Jan. 01, 2025 USD ($)
Subsidiary, Sale of Stock [Line Items]
Number of approved products \| product				3
Number of commercial products actively promoted \| product				1
Allocated Gross Proceeds	$ 50,100,000
Stock split, conversion ratio	0.1		0.11
Common Stock
Subsidiary, Sale of Stock [Line Items]
Conversion of preferred stock (in shares) \| shares	2,381,000			120,000
Related Party
Subsidiary, Sale of Stock [Line Items]
Business combination, consideration transferred, liabilities settled	$ 100,000
Notes Payable \| Third Party Facility
Subsidiary, Sale of Stock [Line Items]
Business combination, consideration transferred, liabilities settled	1,455,000
Line of Credit \| Bridge Loan \| Ligand Facility
Subsidiary, Sale of Stock [Line Items]
Term Loan								$ 18,000,000
Long-term debt, current maturities	12,732,000
Debt conversion to equity, value	5,268,000
Line of Credit \| Bridge Loan \| Third Party Facility
Subsidiary, Sale of Stock [Line Items]
Long-term debt, current maturities							$ 6,053,000
Number of third-party lenders \| lender							2
Preferred stock series A
Subsidiary, Sale of Stock [Line Items]
Preferred stock, par value (in dollars per share) \| $ / shares				$ 0.0001	$ 0.0001
Preferred stock, convertible, denominator	$ 10					$ 1
Preferred stock conversion maximum ownership percentage	9.99%
Change to maximum percentage ownership, notice period	61 days
Conversion of preferred stock (in shares) \| shares	23,810
Preferred stock, shares issued (in shares) \| shares				55,218	56,418
Preferred stock, shares outstanding (in shares) \| shares	57,568			55,218	56,418	0
Preferred Class A
Subsidiary, Sale of Stock [Line Items]
Preferred stock, par value (in dollars per share) \| $ / shares	$ 0.0001
Preferred stock, shares issued (in shares) \| shares	57,568
Preferred stock, shares outstanding (in shares) \| shares	57,568
Ligand \| Preferred stock series A
Subsidiary, Sale of Stock [Line Items]
Preferred stock conversion maximum ownership percentage	49.90%
PIPE Investors \| Preferred stock series A \| Minimum
Subsidiary, Sale of Stock [Line Items]
Preferred stock conversion maximum ownership percentage	4.99%
PIPE Investors \| Preferred stock series A \| Maximum
Subsidiary, Sale of Stock [Line Items]
Preferred stock conversion maximum ownership percentage	9.99%
Company's security holders
Subsidiary, Sale of Stock [Line Items]
Business acquisition, percentage of business owned after merger	7.40%
LNHC security holders
Subsidiary, Sale of Stock [Line Items]
Business acquisition, percentage of business owned after merger	56.10%
LNHC, Inc.
Subsidiary, Sale of Stock [Line Items]
Percentage of voting interest acquired	100.00%
LNHC, Inc. \| Preferred stock series A
Subsidiary, Sale of Stock [Line Items]
Number of shares issued in business combination (in shares) \| shares	31,278
LNHC, Inc. \| Ligand \| Preferred stock series A
Subsidiary, Sale of Stock [Line Items]
Number of shares issued in business combination (in shares) \| shares	31,278
IPO
Subsidiary, Sale of Stock [Line Items]
Sale of stock, number of shares issued in transaction (in shares) \| shares		110,000
Sale of preferred stock price per share (in dollars per share) \| $ / shares		$ 60.00
Proceeds from issuance initial public offering		$ 5,900,000
Offering cost, expense		$ 900,000
Securities Purchase Agreements
Subsidiary, Sale of Stock [Line Items]
Allocated Gross Proceeds	$ 50,100,000
Sale of stock, consideration received on transaction	$ 50,000,000
Number of additional PIPE investors \| investor	2
Securities Purchase Agreements \| Notes Payable \| Related Party
Subsidiary, Sale of Stock [Line Items]
Converted principal amount	$ 100,000
Securities Purchase Agreements \| Convertible Preferred Stock
Subsidiary, Sale of Stock [Line Items]
Sale of stock, number of shares issued in transaction (in shares) \| shares	50,100
Sale of preferred stock price per share (in dollars per share) \| $ / shares	$ 1,000
Preferred stock, par value (in dollars per share) \| $ / shares	$ 0.0001

Pelthos Therapeutics Inc. 10-Q