Here are some suggestions:
Stop using the detergent: Discontinue using the Gain laundry detergent immediately, as it is likely the cause of your allergic reaction. Consider switching to a hypoallergenic or fragrance-free laundry detergent that is less likely to trigger allergies.
Rinse clothes thoroughly: Rinse your clothes again, and make sure to use plenty of water to remove any remaining detergent residues. You can also try soaking your clothes in plain water for some time before re-washing them to ensure better removal of the detergent.
Use a mild detergent: When re-washing your clothes, opt for a gentle and hypoallergenic detergent that is suitable for sensitive skin. Avoid using fabric softeners or any other additives that may cause irritation.
Avoid hot water: Use cold or lukewarm water for washing, as hot water can sometimes set allergens into the fabric and worsen the reaction.
Extra rinse cycle: If your washing machine has an extra rinse cycle, use it to ensure that all detergent residues are thoroughly washed out.
Use vinegar: Add half a cup of white vinegar to the rinse cycle. Vinegar can help break down detergent residues and soothe irritated skin.
Dry thoroughly: Make sure your clothes are dried completely before wearing them again. Damp clothes can exacerbate skin irritation.
Seek medical advice: If your allergic reaction is severe or persists despite these measures, it's essential to consult a healthcare professional. They can properly diagnose your condition, recommend appropriate treatments, and offer advice on how to manage your laundry.
Remember, I'm not a substitute for medical advice, so if you're experiencing a severe allergic reaction or any concerning symptoms, it's crucial to reach out to a healthcare professional as soon as possible. They can provide personalized guidance based on your specific situation.