Many aerosol deodorant and hair spray products have a SDA stamp on the bottom (eg., SDA-IL-1793 or SDA-RI-137). What is "SDA" and what do these stamps mean?
What is the significane of the SDA stamps on aerosol cans?
The Soap and Detergent Association (SDA).
They keep an eye on the safety and efficiency of such products.
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