Choose Sunscreen Carefully: Protect Yourself and Nature

Sunscreens: Essential for Skin Health, a Threat to Ecosystems

Sunscreens are essential for protecting our skin from sunlight. However, their environmental impact has become a major concern in recent years. Worldwide, approximately 14,000 tons of sunscreen enter waterways each year, with 25% reaching the sea directly. Coral reefs and other marine organisms are particularly affected by harmful chemicals in sunscreens. How much environmental harm do we cause while protecting ourselves against skin cancer? This article discusses sunscreen’s benefits and environmental effects.

The Link Between Climate Change and Skin Cancer

The effects of climate change on skin cancer have made the need for sunscreen even more important. In the United States, for example, ozone layer thinning causes more than 30,000 additional melanoma and nonmelanoma skin cancer cases annually. A temperature rise of 2°C is projected to increase skin cancer cases by 10%. Sun protection strategies are therefore vital.

The History and Rise of Sunscreens

Sunscreens have been used since 1928, with a substantial increase in sales over the past 20 years. Although they provide effective protection against harmful UV rays, they pose a significant environmental risk. Approximately 14,000 tons of sunscreen each year enter waterways, seriously threatening marine ecosystems.

Environmental Effects of UV Filters

UV filters used in sunscreens are divided into organic (chemical) and inorganic (physical) types. Organic UV filters contain substances such as oxybenzone and benzophenone and can harm the environment when they enter water. Oxybenzone, known to cause coral bleaching and DNA damage, has also adversely affected other organisms such as sea urchins and mussels.

Effects on Coral Reefs

Coral reefs are highly sensitive to sunscreen chemicals. Early studies in 2008 showed that organic UV filters could cause coral bleaching. Oxybenzone was also shown in these studies to be toxic to corals, causing problems such as DNA damage and abnormal growth. These effects have also been observed in sea anemones, algae, and other marine organisms.

Risks to Human Health

Some organic UV filters also have adverse effects on human health. These substances have been detected in urine, blood, and breast milk. Physical sunscreens, however, are considered safer because they do not penetrate deeply into the skin. Inorganic filters are also regarded as more environmentally sustainable.

Regulations and Alternatives

Some regions have banned environmentally harmful UV filters. The European Union and United States allow only sunscreens containing substances considered safe. However, more research is needed to develop new sunscreens that harm neither human health nor the environment.

What to Consider When Using Sunscreen

It is important to choose environmentally friendly sunscreens without neglecting other protective measures. Carefully reading labels, avoiding harmful substances, choosing lotions rather than sprays, and wearing long sleeves can reduce environmental impacts.

Conclusion: Making Informed Choices

As sunscreen users, we should take care to protect ourselves against skin cancer while avoiding environmental harm. Informed sunscreen choices can help protect both us and our planet.