Detailed answer

When the body is dehydrated, it affects the skin's ability to maintain moisture and function properly. Dehydration reduces the skin's natural exfoliation process, resulting in a buildup of dead skin cells on the surface. This buildup can make the skin appear dull and lackluster. Additionally, dehydration can disrupt the natural oil production, leading to dryness and flakiness. The lack of hydration also affects the skin's elasticity, making it look less plump and youthful. Overall, dehydration can have a negative impact on the skin's appearance, causing it to lose its radiance and appear dull.