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Lactic acid skin care can improve your skin's appearance. Visit HowStuffWorks to learn all about lactic acid skin care.

Skin toner is an important product in skin care. Visit HowStuffWorks to learn all about skin toner.

A gluten-free diet means no wheat, barley or rye. Learn about gluten-free foods and how to eat a gluten-free diet.

Celiac disease is an autoimmune disorder -- more than just a food allergy to gluten. Read about celiac disease, symptoms and treatment.

Can hemorrhoid cream reduce under-eye puffiness? Visit HowStuffWorks to learn if hemorrhoid cream can reduce under-eye puffiness.

Do sunscreen pills really work? Visit HowStuffWorks to learn whether or not sunscreen pills really work.

Does reading in dim light really hurt your eyes? Find out if the old saying is true and see if you can damage your eyes by reading in dim light.

Is olive oil good for my skin? Visit HowStuffWorks to learn if olive oil is good for your skin.

Why do freckles come out in the sun? Visit HowStuffWorks to learn why freckles come out in the sun.

Does sun exposure heal acne? Visit HowStuffWorks to learn whether or not sun exposure heals acne.