Hands are constantly exposed, which means they produce more melanin as a protective response. Sunscreen often gets washed off after hand-washing, leaving skin vulnerable. Additionally, the skin on your hands is thinner than on your arms, making it prone to pigmentation and uneven darkening.
A fun fact: your hands are exposed to the sun more than any other part of your body, except your face. That daily commute holding the steering wheel or walking to the coffee shop adds up. It’s no wonder they often look two shades darker than your shoulders.
