When you shower, you wash away a lot of the natural oils in your skin. Those natural oils not only keep your skin moist, they also protect your skin from damage which can cause even more dryness. If you shower too often, you might be removing more of these natural oils than your skin can replace, leading to dry legs.  Try showering once a day or every other day. If you have to shower in between, use cooler water and only soap the most affected areas (like your armpits and groin area). Showering for too long or too often can also cause problems. Bathe for no more than 10 to 15 minutes at a time, no more than once per day. Oatmeal baths can soothe your skin and help your relieve any itching. Mix 1 cup (85 g) of colloidal or ground oatmeal into a warm bath. Then, soak for about 20 minutes. Rinse off with cool water, then towel yourself dry. You can find colloidal oatmeal in the bath department of your local store or online. If you want to make your own colloidal oatmeal, put regular rolled oats into a blender and grind them into a finer consistency. Soaps which are designed to deal with oil skin or which are badly pH balanced can aggravate your sensitive skin. Look for soaps that are designed for “sensitive skin” or that include moisturizers. One study found Dove soaps, and specifically Dove White and Dove Baby to be the most pH balanced for sensitive skin. When you go through your hygiene routine, it’s a good idea to be gentle with your skin. Your skin is very sensitive and the skin on your legs is specifically very thin and prone to problems. Treat it kindly to help your skin heal and prevent problems from coming back.  Exfoliate your skin occasionally. Exfoliating is good for your skin but you need to do it in a gentle way and not exfoliate too often. A baking soda paste or washcloth should be more than enough to remove dead skin cells, while items like loofahs and pumice stones can actually make the problem worse. Use a fresh razor and shave gently, if you shave your legs. Dull razors can irritate your skin...

How would you rephrase that briefly using Chinese?
调整洗澡次数。 用温水洗澡。 不用刺激性大的肥皂。 温和地对待皮肤。 轻轻抹干皮肤或让它自然风干。