Doctor Explains Why Freckles Darken in Summer

Freckles, those small, flat spots of brown or light brown color, become more noticeable during the summer months. This harmless skin characteristic darkens due to increased melanin production, the pigment responsible for skin and hair color. Genetics plays a significant role in their appearance, with freckles typically surfacing on sun-exposed areas like the face and shoulders.

Dr. Sermed Mezher, a British general practitioner, explains that while some freckles, like solar lentigo, develop over time and can indicate sun damage, the common freckles known as ephelides are characteristic of fair-skinned individuals with red or blonde hair. These develop in childhood. "The key role is played by the variation of the MC1R gene," he stated. This genetic variation causes melanin to accumulate in small clusters rather than distributing evenly to create a tan. Sun exposure intensifies these pigment clusters, making freckles more prominent, though they usually fade in winter.

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There are several types of freckles. One of them is solar lentigo, which develops over a lifetime and can be a sign of sun-induced skin damage. However, the freckles we most often talk about, known as ephelides, are typical for fair-skinned people with red or blonde hair and develop in childhood.

While some embrace their freckles, others seek ways to minimize their visibility. According to the Cleveland Clinic, freckles cannot disappear entirely, but their appearance can be softened. Methods include topical preparations, laser treatments, and cryotherapy. Consulting a dermatologist is recommended to determine the most suitable approach for each individual. The most effective way to prevent their prominence is through diligent sun protection. This involves regularly applying sunscreen with SPF 30 or higher, wearing a wide-brimmed hat and sunglasses, and avoiding direct sunlight during peak UV hours, typically between 10 a.m. and 4 p.m.

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The variation of the MC1R gene plays a key role. Due to this genetic variation, melanin accumulates in small clusters instead of distributing evenly to create a tan. When the skin is exposed to the sun, these pigment clusters darken further, making freckles more pronounced, while they usually fade during the winter.