Fine product, but remember to follow the instructions
Definitely works to remove yellowing stains from the reaction between anti-perspirant and sweat, but don't expect miracles if the stains are very old and thick. For it to work properly, it's necessary to spray on the inside of the shirt, work it in with a brush and wait 20 minutes before washing.
If used regularly, it removes lite yellowing and prevents build-up of new ones. Fine product IMO.
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