can you put mineral sunscreen over chemical

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  • What’s the difference between chemical and mineral sunscreen?

  • While chemical sunscreens (like Neutrogena Ultra Sheer Liquid Sunscreen Broad Spectrum SPF 70 work by soaking into your skin, mineral sunscreens (like La Roche-Posay Anthelios Mineral SPF 50 Sunscreen) 鈥?the kind that can leave you looking chalky unless you really rub them in 鈥?protect by creating a physical barrier between your skin and the sun.

  • Can you absorb mineral sunscreen?

  • While it’s possible you could absorb a small amount of mineral sunscreen, it’s unlikely based on the way they work: They sit atop your skin and deflect the sun’s rays, and are easily washed off with sweat or water.

  • Why do sunscreens have multiple active ingredients?

  • Many chemical sunscreen products include multiple active ingredients in order to provide broad-spectrum protection, as well as antioxidants (vitamins C and E) to combat the free radical damage that chemical sunscreens predispose the skin to.

  • What are the ingredients in mineral sunscreen?

  • 鈥淢ineral sunscreen [ingredients], zinc oxide and titanium dioxide, are small particles that sit on the skin鈥檚 surface and physically prevent UV rays from penetrating the skin,鈥?says Jennifer L. MacGregor, MD , a board-certified dermatologist at Union Square Laser Dermatology in New York City.

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