When you go through your morning makeup routine, your goal is obviously to improve your appearance. But how is that seemingly harmless, perfectly applied layer of powder really affecting your skin? Most of the time, makeup doesn't have any major negative effects -- other than maybe the early-morning frustration of applying it. However, it could cause a few skin reactions. Most of these reactions aren't severe or long-lasting, but you might want to know how your makeup is affecting your skin.
Some people experience allergic reactions to common cosmetic-product ingredients. These reactions can come in two types: irritant contact dermatitis, which is an itching or burning reaction to a product irritating the skin, and allergic contact dermatitis, which is more of a "true" allergy to specific ingredients that results in swelling, itching, or blisters [source: American Academy of Dermatology]. Both of these types of reactions are most commonly caused by things like fragrances or preservatives in makeup and other skin care products.
Some people experience allergic reactions to common cosmetic-product ingredients. These reactions can come in two types: irritant contact dermatitis, which is an itching or burning reaction to a product irritating the skin, and allergic contact dermatitis, which is more of a "true" allergy to specific ingredients that results in swelling, itching, or blisters [source: American Academy of Dermatology]. Both of these types of reactions are most commonly caused by things like fragrances or preservatives in makeup and other skin care products.