Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Cash flows from operating activities:
Net loss	$ (27,232)	$ (12,400)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation	5,259	213
Non-cash research and development services	621	357
Net accretion of discount/premium on debt securities	(73)	(13)
Other	6	2
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	4,360	79
Interest receivable on marketable securities	(1,499)	0
Accounts payable	(1,055)	(686)
Accrued expenses	(1,373)	(862)
Other long term assets	(174)	0
Other current liabilities and lease liabilities	(8)	(7)
Net cash used in operating activities	(21,168)	(13,317)
Cash flows from investing activities:
Purchase of property, plant and equipment	0	(19)
Purchases of marketable securities	(122,988)	(15,731)
Maturities of marketable securities	21,689	0
Net cash used in investing activities	(101,299)	(15,750)
Cash flows from financing activities:
Issuance of preferred stock	0	8,423
Initial public offering, net of issuance costs paid	269,102	0
Exercise of stock options	11	0
Net cash provided by financing activities	269,113	8,423
Net increase (decrease) in cash and cash equivalents	146,646	(20,644)
Cash and cash equivalents—beginning of period	21,766	53,084
Cash and cash equivalents—end of period	168,412	32,440
Supplemental schedule of noncash activities:
Unrealized loss on marketable securities	(584)	0
Right-of-use asset exchanged for lease liabilities	$ 0	$ 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.