Proper sunblock application is crucial for protecting your skin from harmful UV rays. Here's how to do it effectively:
Choosing Your Sunblock
- SPF: Select a broad-spectrum sunscreen with an SPF of 30 or higher. This means it protects against both UVA and UVB rays. [Source: FDA, MD Anderson Cancer Center]
- Type: While the term "sunblock" often refers to physical blockers (mineral sunscreens containing zinc oxide or titanium dioxide that reflect UV rays), "sunscreen" typically refers to chemical sunscreens that absorb UV rays. Choose the type you prefer. [Source: Verywell Health]
Applying Sunblock
- Generous Application: Apply liberally 30 minutes before sun exposure to allow for absorption. Use approximately 1 ounce (30 grams) to cover your entire body. [Source: Multiple sources including AAD, Skin Cancer Foundation]
- Complete Coverage: Don't forget often-missed areas like your ears, neck, back of the neck, and the tops of your feet. [Source: Arlington Dermatology]
- Reapplication: Reapply at least every two hours, especially after swimming, sweating, or toweling off. If you are outside for extended periods, more frequent reapplication is necessary. [Source: Multiple sources including FDA, NYT Wirecutter]
Important Considerations:
- Absorption Time: Allow about 15 minutes for the sunscreen to absorb into your skin before sun exposure. [Source: AAD]
- After Swimming or Sweating: Reapplication is essential after water activities or heavy sweating as sunscreen can be washed or rubbed off. [Source: Multiple Sources]
By following these steps, you can maximize the sun protection offered by your sunblock and safeguard your skin health.
