can you mix sunscreen with moisturizer?

Can you mix sunscreen with moisturizer?

I did it all the time when I was younger. I thought I was so clever, too.

Most sunscreens back then were so thick, they’d turn my face into a greasy, shiny pan… or Caspar The Ghost. You’d think someone as pale as me wouldn’t even notice the white cast some sunscreens leave behind. Oh boy, you’re wrong…

Mixing a few drops of sunscreen with my fave moisturizer seemed like the perfect solution. I’d get sun protection without all the aesthetic side effects. Plus, I’d cut my skincare routine shorter to boot.

If you’re thinking, “That’s a great idea, why haven’t I thought of that myself?,” I’ve got bad news for you. Mixing your sunscreen with moisturizer is a crappy idea. Here’s why:

What Happens When You Mix Sunscreen With Moisturizer?

Mixing sunscreen with moisturizer seems such an innocent thing. But two nasty things happen when you force them to mingle so close together:

  1. You’re diluting your sunscreen: Think about it. To get the SPF level stated on the packaging, you need to apply 1/2 teaspoon on your face. If you mix your sunscreen with your moisturizer (or any other skincare product, for that matter) there’s no way you can apply that much. You could be turning a SPF30 into an SPF15 or lower!
  2. Conflict of ingredients: Sunscreens are delicate things. Some of the ingredients in your moisturizer or foundation may compromise their UV filters, making them less effective.

Translation: when you’re mixing sunscreen with moisturizer, lotion, serum or whatever, you’re compromising its effectiveness.

Related: How Much Sunscreen Do You Really Need To Apply?

Can You Mix Sunscreen With Moisturizer?

Mixing your sunscreen with moisturizer, foundation or lotion may seem like the perfect solution to all your sunscreen problems, but in reality, it does your skin more harm than good.

When you’re mixing them together, you’re compromising the effectiveness of your sunscreen, leaving your skin prone to sun damage, wrinkles and dark spots. Not a risk worth taking, is it? 😉

Instead, look for a sunscreen you love using. These days, you can easily find sunscreens with lightweight textures and in-built tint to avoid both the greasiness and the white cast. Phew!

Related: What Goes First: Moisturizer Or Sunscreen?


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Why Is It Bad To Dilute Sunscreen?

Let’s dig into this a bit more. Sunscreen is formulated to create a protective barrier over your skin that absorbs or reflects harmful UV rays. This barrier relies on a precise concentration of active ingredients to work effectively. When you dilute sunscreen with moisturizer, you’re reducing the concentration of those active ingredients. Even if it feels like you’re applying enough product, the protection is no longer at the level it’s supposed to be.

Imagine going out in the sun thinking you’re wearing SPF 30, but in reality, it’s acting more like an SPF 10. Scary, right? That’s the risk you take when you mix.

Can Certain Sunscreen Ingredients Be Deactivated by Mixing?

Absolutely. Many chemical sunscreens, for example, rely on ingredients like avobenzone or octinoxate, which can destabilize when combined with other skincare ingredients. Physical sunscreens with zinc oxide or titanium dioxide aren’t immune either. Mixing them with emollients or other actives can reduce their ability to form a proper shield on your skin.

What About Foundation, BB Cream, And Other Skincare And Makeup Products?

I’ve already touched on this above, but I’ll say it again just to make sure: you CAN’T mix sunscreen with anything.

You can’t mix sunscreen with lotion.

You can’t mix sunscreen with foundation.

You can’t mix sunscreen with primer.

You can’t mix sunscreen with serum.

You can’t mix sunscreen with BB Cream (or CC Cream).

I’d even be wary of mixing sunscreen with another sunscreen (not all UV filters play well together).

Use sunscreen alone, on top of moisturizer, serum, or clean skin. Wait 15 minutes to give it time to settle and then apply makeup on top (if you don’t wait for it to settle, you’ll just rub it right off!).

What If Your Sunscreen Feels Too Thick or Greasy?

Good news: Sunscreens have come a long way! If you’re struggling with thick, greasy formulas or ones that leave a white cast, there are so many options now:

  • Lightweight gels: Perfect for oily or acne-prone skin.
  • Tinted sunscreens: Avoid the white cast while evening out your complexion.
  • Sunscreen sprays: Great for quick touch-ups, but make sure you still rub them in.
  • Powder sunscreens: Ideal for reapplication over makeup during the day.

Take the time to find a formula you enjoy using. The best sunscreen is the one you’ll actually wear every day.

What About Tinted Sunscreens or Makeup with SPF?

Ah, another common question! Tinted sunscreens and makeup products like foundation or BB cream with SPF can offer added sun protection, but they’re NOT a substitute for your regular sunscreen.

Why not, I hear you ask? Because most people don’t apply enough of these products to get the SPF level stated on the bottle. Think of them as a bonus layer of protection, not your main defense.

The Bottom Line

Mixing sunscreen with moisturizer, lotion or any other products may seem like a good idea, but it’s anything but. You’ll just dilute the SPF and compromise the effectiveness of the sunscreen. Instead, find a sunscreen you love, apply it correctly, and make it a non-negotiable part of your routine. Your skin will thank you!