Ask the Laundress
Several of my husband's golf-style, performance fabric polos have a hard, white area under the arms, presumably from deodorant. Is there a way to get rid of this?
We recommend pretreating with Stain Solution and a Stain Brush, gently working the solution into the fabric. Follow by soaking the shirt in tepid water. Once you are satisfied with the removal, you can then launder as normal. I've linked below additional washing instructions.
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Stain Solution 16 fl. oz.
Sport Detergent 16 fl. oz.