You may use a product too much. Something in it does not agree with your system. Allergies can also build up over time. You might use a product safely for years, but then have problems with it later.
AHA is the short term for alpha hydroxy acids. Cosmetic makers claim that AHA lessens wrinkles. They say that it softens other signs of aging, too. These claims may be true.
Many people have had skin problems after using AHAs. They have sent lots of complaints to the FDA. The complaints are about:
To use AHA products safely, you should:
Products for your eyes last a shorter time than other cosmetics. It's a good idea to throw away mascara after three months, for example. That's because you can get eye infections from it. If mascara dries out, do not add water or saliva to it. That can cause germs to grow.
Natural products have a very short shelf life. You should replace them even more often.
Lots of people use the testers at makeup counters. Testers can have lots of germs. Products you keep in your home are less likely to have germs.
Do you want to test a product at the counter anyway? If so, use a new sponge or cotton swab.
Yes! Always read them carefully. A label tells you:
Alcohol Free: The product does not contain ethyl alcohol. The product may contain other alcohols.
Cruelty Free: "Cruelty free" claims no animals were hurt in making this product. But most products have been tested on animals at some point. Look for "no new animal testing."
Fragrance Free: The product has no odor. But fragrances may be used to hide the smell of chemicals.
Hypoallergenic: This term claims the product is less likely to cause an allergic reaction. This kind of claim has no basis in science. Labels make lots of claims that products won't cause skin problems. But any product can cause them.
Natural: The product is made from plants or animals. There is no proof that natural products are better for the skin than other products.
Noncomodogenic: The product does not contain anything that can clog pores and lead to acne.
Shelf Life (Expiration Date): These dates are only a rule of thumb. Products must be stored and handled the right way. If not, they may expire long before the date shown.
To learn more:
U.S. Center for Food Safety and Applied Nutrition
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