Sunscreen Myths and Facts - What Really Protects Your Skin?
UV Safety Month serves as an important reminder that sunscreen plays a critical role in protecting the skin from harmful ultraviolet (UV) radiation. Although many people use sunscreen regularly, misconceptions remain about how sunscreen works and what steps provide the best protection.
Understanding the facts about sunscreen can help reduce the risk of skin damage and skin cancer. According to the Skin Cancer Foundation, daily sunscreen use can significantly lower the risk of developing skin cancer.
Why Sunscreen Is Important
Exposure to ultraviolet (UV) radiation can damage the DNA within skin cells, contributing to premature aging and increasing the risk of skin cancer. Both UVA and UVB rays can harm the skin, but they affect it in different ways:
UVA rays penetrate deeper into the skin and contribute to aging and long-term skin damage.
UVB rays are the primary cause of sunburn and play a significant role in the development of skin cancer.
Using sunscreen consistently can help protect the skin from both forms of UV radiation.
Common Sunscreen Myths and the Facts
Myth: You Only Need Sunscreen on Sunny Days
Fact: UV rays can pass through cloud cover, which means skin damage can occur even when the weather is overcast. Sunscreen should be part of your daily routine regardless of the forecast.
Myth: Higher SPF Means You Don't Need to Reapply
Fact: While higher SPF levels provide greater protection, no sunscreen remains effective all day. Reapplication is recommended every two hours and after swimming or excessive sweating.
Myth: One Morning Application Lasts All Day
Fact: Sunscreen naturally wears off throughout the day. Reapplying sunscreen is necessary to maintain adequate protection.
Myth: People With Darker Skin Don't Need Sunscreen
Fact: Skin cancer can affect individuals of every skin tone. While melanin provides some natural protection, it does not eliminate the risk of skin damage or skin cancer.
Myth: Makeup With SPF Provides Enough Protection
Fact: Most people do not apply enough makeup to achieve the full SPF level listed on the product. A dedicated sunscreen is still recommended for optimal protection.
What Actually Protects Your Skin
Sunscreen works best when it is used as part of a comprehensive sun protection strategy. To help protect your skin:
- Use a broad-spectrum sunscreen that protects against both UVA and UVB rays
- Choose a sunscreen with an SPF of 30 or higher
- Apply sunscreen generously to all exposed skin
- Reapply every two hours and after water exposure
- Seek shade during peak sunlight hours between 10 a.m. and 4 p.m.
- Wear protective clothing, wide-brimmed hats, and sunglasses
Together, these practices can help reduce UV exposure and support long-term skin health.
Special Considerations During Cancer Treatment
Certain cancer treatments can make the skin more sensitive to sunlight. Patients receiving chemotherapy, radiation therapy, or some targeted therapies may be more susceptible to sunburn and skin irritation.
If you are undergoing cancer treatment, speak with your care team about specific sun protection recommendations, including sunscreen options and additional protective measures.
Protecting Your Skin Throughout the Year
UV exposure is not limited to the summer months. Taking steps to protect your skin should be part of your routine year-round.
UV Safety Month is an opportunity to remember that simple, consistent habits—such as applying sunscreen daily and limiting unnecessary sun exposure—can help reduce long-term skin damage and support overall health.