The coolness of the water will help soothe the pain and uncomfortableness of shingles. But make sure it's not too cold! Your skin will react to any extreme temperature, causing even more pain. And when you're done soaking, dry yourself off completely with a warm towel.   You could take an oatmeal or starch bath, too. In lukewarm water (not cold or hot), the oatmeal or starch will provide you a soothing, silkening feeling. Read wikiHow's How to Make an Oatmeal Bath for ideas! Be sure to wash any towels you use in the hottest setting on your washing machine. You don't want to spread anything! Just like the bath, anything cool and wet will feel great on your skin. Just grab a washcloth, soak it in cool water, wring it out, and apply to your skin. After several minutes, repeat the process to renew the feeling.   Don't use ice packs! Those are too cold for your skin right now -- if you think it's sensitive normally, it's extra sensitive right now. Always, always, always wash your towels after you use them, especially when you have shingles. Normal lotions -- especially those that are scented -- could just make the situation worse. Stick to lotions like calamine that are extra soothing and be sure to wash your hands after application. Remember to apply it only to the affected area. That's the stuff found in hot red peppers, believe it or not. While you probably shouldn't spend the afternoon rubbing peppers on yourself, you might find relief in using a cream that contains it. They're widely available at most pharmacies.  Keep in mind that this doesn't make the shingles go away -- but it will make you feel a whole lot better. Your case should clear up in about 3 weeks, for the record. Just on the sores, though! It'll dry them up and hasten the healing process. Just make a paste out of 2 parts baking soda (or cornstarch) to one part water. Leave the paste on for about 15 minutes, rinse it off, and pat dry with a towel. Then wash the towel when you're done! You can do this a few times a day. But don't do it too often!...

How would you rephrase that briefly using Vietnamese?
Ngâm bồn tắm nước mát. Chườm khăn ẩm. Thoa lotion calamine. Dùng kem bôi capsaicin. Đắp muối nở hoặc tinh bột lên vết loét.