1. Skipping daily sun protection.
2. Applying makeup to an unwashed face.
3. Over-cleansing or stripping the skin.
4. Using products that don’t suit your skin type.
5. Sleeping in makeup.
6. Smoking.
7. Squeezing or picking pimples.
8. Ignoring product instructions.
9. Applying skin lightening products all over the face instead of on darker areas.
10. Using unsanitary tools and sponges or unclean hands to remove makeup.

Be sure to read our 10 Commandments of Skin Care too.