Using a pen remover, especially a fabric stain remover pen, involves a simple process of applying the remover to the stain and gently rubbing it in. According to a YouTube video titled "How to use Fabric Stain Remover Pen for your clothes!," the following steps should be followed:
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Gently rub the pen remover back and forth on the stain.
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The stain remover will come out onto the fabric.
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Rubbing gently will cause the remover to foam up, working to lift the stain.
