Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025
Cash flows from operating activities:
Net loss	$ (71,733)	$ (48,148)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation	12,866	466
Non-cash research and development services	1,849	1,382
Net accretion of discount/premium on debt securities	(1,563)	(418)
Other	108	29
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	3,198	(1,126)
Interest receivable on marketable securities	(3,854)	0
Accounts payable	(212)	(263)
Accrued expenses	1,182	132
Other non-current assets	(406)	0
Other current liabilities and lease liabilities	(38)	(28)
Net cash used in operating activities	(58,603)	(47,974)
Cash flows from investing activities:
Purchase of property, plant and equipment	(367)	(19)
Purchases of marketable securities	(638,386)	(24,061)
Maturities of marketable securities	94,608	15,000
Net cash used in investing activities	(544,145)	(9,080)
Cash flows from financing activities:
Issuance of Series B preferred stock, net of issuance costs paid	0	8,423
Pre-funded equity financing	0	1,060
Initial public offering, net of issuance costs paid	269,102	0
Public offering, net of issuance costs	414,335	0
Pre-funded warrants, net of issuance costs	28,120	0
Exercise of stock options	1,581	147
Net cash provided by financing activities	713,138	9,630
Net increase (decrease) in cash and cash equivalents	110,390	(47,424)
Cash and cash equivalents—beginning of period	21,766	53,084
Cash and cash equivalents—end of period	132,156	5,660
Supplemental schedule of noncash activities:
Unrealized (loss) gain on marketable securities	(3,112)	1
Right-of-use asset exchanged for lease liabilities	$ 694	$ 90

Research And Development Expense, Noncash, In Exchange For Services

No definition available.

Name:	mane_ResearchAndDevelopmentExpenseNoncashInExchangeForServices
Namespace Prefix:	mane_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.