Summary of Significant Accounting Policies - Schedule of Fair Value of Earnout Liability (Detail) - Earnout Liabilities [Member]	Jun. 30, 2025	Jan. 16, 2025
Sale of Inventory [Member] | Discount Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Earnout liabilities, measurement input	0.21	0.21
Sale of Inventory [Member] | Probability of Milestone Achievement [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Earnout liabilities, measurement input	1	1
Sale of Inventory [Member] | Expected Term (years) [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Earnout liabilities term	6 months 14 days	1 year
Hair and Scalp Products [Member] | Discount Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Earnout liabilities, measurement input	0.21	0.21
Hair and Scalp Products [Member] | Probability of Milestone Achievement [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Earnout liabilities, measurement input	0.75	0.75
Hair and Scalp Products [Member] | Expected Term (years) [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Earnout liabilities term	1 year 6 months 14 days	2 years