Why is a person paler in the winter and more flushed brighter red in the summer?

A person tends to be paler in winter due to reduced exposure to sunlight, which decreases melanin production in the skin. In contrast, during summer, increased sun exposure stimulates melanin production, giving the skin a more tanned appearance and a flushed look due to increased blood flow as the body works to cool itself. Additionally, factors like outdoor activities and hydration levels can influence skin color and complexion throughout the seasons.