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Is it OK to leave sunscreen in the sun?

Published in Sunscreen Care 2 mins read

No, it is not okay to leave sunscreen in the sun.

Leaving sunscreen exposed to the sun's heat can significantly degrade its effectiveness. According to research, heat can cause the active ingredients in sunscreen to break down. This breakdown reduces the sunscreen's ability to protect your skin from harmful UV rays.

Why You Should Avoid Leaving Sunscreen in the Sun

  • Degradation of Active Ingredients: Sunscreen relies on specific chemicals to block UV rays. When exposed to high temperatures, these ingredients become less effective.
  • Reduced SPF: The Sun Protection Factor (SPF) of your sunscreen may decrease, leaving you vulnerable to sunburn and long-term skin damage.
  • Altered Consistency: Heat can also change the texture of the sunscreen, making it difficult to apply evenly.
  • Packaging Protection: Sunscreen packaging is designed to protect the formula from light and heat. Removing it from its packaging exposes it to the elements and could accelerate its degradation.

Proper Storage of Sunscreen

To ensure your sunscreen works as intended, follow these guidelines:

  1. Store in a Cool, Dry Place: Keep sunscreen away from direct sunlight and heat. Ideal locations include a cabinet or drawer in your home.
  2. Original Packaging: Always store sunscreen in its original container as it is designed to protect the formula.
  3. Avoid Hot Cars: Do not leave sunscreen in your car, especially during hot weather, as the temperature inside can rise dramatically.
  4. Check Expiration Dates: Sunscreen has an expiration date. Use it before it expires to ensure its effectiveness.
  5. Replace if compromised: If the sunscreen has changed color, consistency, or smell, it is best to replace it.

By following these tips, you can ensure your sunscreen remains effective and protects you from the sun's harmful UV rays.

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