Why does my face have two skin tones? How can I fix it? (photo)

For the longest time, I have notice my face has two tones of color. My parents immigrated to Utah when I was 2. We came from a developing country and so we have not heard of sunscreen till I was around 13. I spent most of my childhood outside in the sun for hours every day after school but never felt any skin pain or sunburn. Looking at old photos, when I was a kid, my facial skin tone was one color. Around 13 is when I notice the area around my nose/eyes/cheeks is different color than all else

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