Generally, moisturizer should be applied before sunscreen, but there are important exceptions depending on the type of sunscreen.
Understanding the Difference: Mineral vs. Chemical Sunscreens
The order of application hinges on whether you're using a mineral (physical) or chemical sunscreen.
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Mineral Sunscreens (Zinc Oxide & Titanium Dioxide): These sunscreens sit on top of the skin, creating a physical barrier against UV rays. Because they don't need to be absorbed, moisturizer should be applied first. This allows the moisturizer to hydrate your skin, creating a smooth base for the sunscreen to adhere to. As one reference states, "a physical sunscreen (aka mineral sunscreen) should always be applied after your moisturizer."
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Chemical Sunscreens: These sunscreens absorb into the skin and work by absorbing UV rays. While some sources suggest applying these before moisturizer for better absorption, others advise applying after, ensuring adequate hydration prior. It is generally better to follow manufacturer instructions.
Best Practices for Application
Regardless of sunscreen type, follow these steps for optimal results:
- Cleanse and tone your skin.
- Apply moisturizer: Allow it to fully absorb into your skin (approximately 30 seconds).
- Apply sunscreen: Use a generous amount (about a shot glass full for your face and body) and reapply every two hours, especially after swimming or sweating.
Several sources confirm that for mineral sunscreens, moisturizer goes first. A Reddit thread on skincare discusses applying sunscreen last after moisturizer has soaked in. Other sources such as L'Oréal Paris suggest applying sunscreen after moisturizer as the final step in the skincare routine. However, for chemical sunscreens, the order might vary based on product specifics and individual preference.
