Note 6 - Revenue Recognition (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Accounts Receivable, Allowance for Credit Loss, Ending Balance	$ 28,398		$ 28,398		$ 20,252
Cosmetic Ingredients [Member] | Non-US [Member] | Geographic Concentration Risk [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage	35.00%	24.00%	28.00%	23.00%
ASI [Member] | Non-US [Member] | Geographic Concentration Risk [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage	75.00%	72.00%	73.00%	69.00%
ASI [Member] | CHINA | Geographic Concentration Risk [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage	46.00%	43.00%	43.00%	40.00%