I've noticed that the skin on my face is uneven in tone. The area from my forehead to my nose is fair, but the skin below my nose is darker. What could be causing this, and is there any treatment to even out the skin tone?

This condition is known as hyperpigmentation, where certain areas of the skin produce more melanin, leading to darker patches. To treat this, you can use a skin lightening cream containing hydroquinone or kojic acid. Apply a thin layer on the dark areas once daily, preferably at night. Additionally, using a broad-spectrum sunscreen with SPF 30 or higher every day can help prevent further darkening of the skin.