How does use of air conditioners affect human skin?

As air conditioners remove moisture from the air to perform cooling functions, a decrease in humidity levels can cause tight, flaky, itchy, dull and rough skin, according to celebrity dermatologist Deepali Bhardwaj. Prolonged exposure to ACs can accelerate skin ageing, she added. ACs can exacerbate existing skin conditions and make skin more sensitive to allergies, acne and bacterial infections.