Description of Business and Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2021 USD ($) Segment Units ProductCategory SalesChannel Customer	Dec. 31, 2020 USD ($) Customer	Jun. 30, 2008 USD ($)
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Accumulated deficit	$ 110,014,000	$ 109,115,000
Number of reporting segments | Segment	3
Number of business units | Units	2
Allowance for doubtful accounts receivable	$ 3,000	12,000
Advances	250,000	250,000	$ 250,000
Specified amount of revenue to be utilized for advances			$ 250,000
Revenue realized from agreement	$ 0
Intangible assets useful life	15 years
Number of revenue-generating operating segments | Segment	2
Number of product categories | ProductCategory	2
Number of sales channels | SalesChannel	2
Description of payment terms	The Company's revenue consists primarily of sales of products from its two revenue-generating operating segments, the biomedical products market and anti-aging products market. The biomedical market segment markets and sells primary human cell research products with two product categories, cells and media, which are sold both domestically within the United States and internationally. The anti-aging market segment markets and sells a line of skincare products sold through two sales channels: ecommerce and professional. The ecommerce channel sells direct to customers through online orders, while professional sales are to spas, salons and other skincare providers
Accounts receivable, net	$ 844,000	403,000
Write-offs of receivables	$ 0	0
Product return guarantee period	30 days
Allowance for sales returns	$ 0	0
Advertising costs	165,000	245,000
Financial assets	0
Financial liabilities	$ 0
Fair value of warrant liability		$ 0
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 01, 2021
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]	true
Accounting Standards Update [Extensible Enumeration]	us-gaap:AccountingStandardsUpdate201912Member
Customer Concentration Risk [Member] | Major Customer [Member] | Accounts Receivable, Net [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage	62.00%	55.00%
Biomedical Market [Member] | Customer Concentration Risk [Member] | Revenue, Segment Benchmark [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Number of customers more than ten percentage of revenue | Customer	1	1
Biomedical Market [Member] | Customer Concentration Risk [Member] | Major Customer [Member] | Revenue, Segment Benchmark [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage	39.00%	41.00%
Risk-Free Interest Rate [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Warrants and rights outstanding, measurement input		0.08
Volatility [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Warrants and rights outstanding, measurement input		80.0
Term to Expiration [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Warrants and rights outstanding, term		2 months 15 days
Subsequent Financing [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Warrants and rights outstanding, measurement input		0.0
Australian Taxation Office [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Percentage of refundable tax credit on qualified research and development	43.50%
Reductions to research and development costs	$ 113,000	$ 157,000
LSC [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Allowance for doubtful accounts receivable	$ 0	$ 0
Minimum [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Estimated useful life of property and equipment	3 years
Maximum [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Estimated useful life of property and equipment	5 years
Sales commissions amortization period	1 year