Itchy skin, rashes, and redness are all signs of skin irritation. While some of the causes of skin irritation are obvious, such as insect bites or exposure to poison ivy, others may come as a surprise.

Here are nine unexpected culprits behind skin irritation:.

1. Laundry Detergent

Your laundry detergent may be causing your skin to itch. Many laundry detergents contain fragrances and other additives that can cause skin irritation, especially for those with sensitive skin.

Look for laundry detergents that are labeled as hypoallergenic or fragrance-free to prevent skin irritation.

2. Shampoo and Conditioner

Is your hair care routine causing skin irritation? Shampoo and conditioner contain many of the same ingredients as laundry detergent, including fragrances and additives that can cause skin irritation.

If you’re experiencing skin irritation on your scalp or neck, try switching to a fragrance-free shampoo and conditioner.

3. Fabric Softener

Fabric softener may make your clothing feel soft and smell fresh, but it can also cause skin irritation. Fabric softeners contain fragrances and other chemicals that can cause allergic reactions.

Try using a dryer ball or using vinegar as a natural fabric softener instead.

4. Nickel

Nickel is a common metal found in jewelry, clothing fasteners, and even some foods. For some people, coming into contact with nickel can cause skin irritation.

If you have a nickel allergy, try avoiding jewelry that contains nickel and choose clothing with plastic or coated metal fasteners instead.

5. Hand Sanitizer

Hand sanitizer may be an essential part of your daily routine, but it can also cause skin irritation. Many hand sanitizers contain alcohol and other chemicals that can dry out and irritate the skin.

If you’re experiencing skin irritation from hand sanitizer, try using a moisturizing hand sanitizer or washing your hands with soap and water instead.

6. Sunscreen

Sunscreen is important for protecting your skin from the sun’s harmful rays, but it can also cause skin irritation.

Some people are allergic to the chemicals in sunscreen, while others may experience skin irritation from the physical act of applying sunscreen. If you’re experiencing skin irritation from sunscreen, try using a different type of sunscreen or applying it more carefully.

7. Heat

Heat can cause skin irritation, especially in people who sweat heavily. Bacteria and yeast thrive in warm, moist environments, which can lead to skin irritation and rashes.

To prevent skin irritation from heat, try wearing loose, breathable clothing and avoiding excessive sweating.

8. Stress

Stress can have many negative effects on the body, including skin irritation. Stress can exacerbate skin conditions such as eczema and acne, and may even cause new skin rashes and irritation.

To prevent skin irritation from stress, try practicing relaxation techniques such as yoga or meditation.

9. Diet

Your diet can also play a role in skin irritation. Certain foods, such as dairy and gluten, may exacerbate skin conditions such as eczema and rosacea.

If you’re experiencing skin irritation, try eliminating potential trigger foods from your diet to see if it makes a difference.