4. Sleeping With Makeup On

Leaving makeup on overnight clogs pores and prevents your skin from repairing itself while you sleep. This habit accelerates aging by encouraging breakouts, dullness, and irritation. Over time, it can also lead to uneven skin tone and fine lines. In contrast, thoroughly cleansing your face before bed lets active ingredients in night creams work more effectively. Even occasional lapses can have cumulative effects, so making this step a nightly habit is crucial for skin health.