Hypochlorous Acid Mist

Hypochlorous Acid Mist

We know you’d never over-do it… but if you did, we got you. Hydrating, soothing, cooling mist with a name we can’t pronounce. We just know it works.

Select Type
Available options
Reusable snack bag with banana pattern and yellow zipper, featuring the Sun Bum brand.

It's in the bag. Bundle 5 items and get a limited-edition bag.

Start Now
Shop Local

More About This Product

Why We Made This

Sometimes our skin needs a little extra love. This mist gives sensitive skin an everyday refresh of soothing hydration. It’s also cooling after a day in the sun.

Trust The Bum®

  • Helps cool and soothe sunburned skin.
  • Dermatologist tested.
  • Non-stinging and sensitive-skin friendly.
  • Fragrance-free and pH balanced.
  • Cruelty Free
  • Vegan
What's Inside

Ingredients:

Water, Sodium Chloride, Hypochlorous Acid

Made Without:

Alcohol, oil, sulfates, parabens, fragrance, and dye.

Good Stuff:

Hypochlorous acid helps calm and soothe sunburned and irritated skin.

How To Use

Twist on the spray cap and go! Mist onto clean, dry skin after sun exposure or any time you need a soothing refresh. Close your eyes when you are misting your face.

Icon Icon Icon

Pairs Great With

How to Use Daily 50 Body Lotion

Apply our Daily 50 Body Lotion liberally 15 minutes before sun exposure. Reapply body sunscreen every 80 minutes and more frequently after swimming/sweating, and excessive towel drying. We love incorporating this as the last step in our morning skincare routine.

How to Use Daily 50 Face Lotion

Shake well before use. Apply our Daily 50 Face Lotion liberally 15 minutes before sun exposure. Reapply face sunscreen every 80 minutes and more frequently after swimming/sweating, and excessive towel drying. We love incorporating this as the last step in our morning skincare routine.

How to Use Daily Glow Lotion

Shake well before use. Apply our Daily Glow Lotion liberally 15 minutes before sun exposure. Reapply every 80 minutes and more frequently after swimming/sweating, and excessive towel drying. We love incorporating this as the last step in our morning skincare routine.

How to Use Daily 50 Face Gel

Shake well before use. Apply our Daily 50 Face Gel liberally 15 minutes before sun exposure. Reapply every 80 minutes and more frequently after swimming/sweating, and excessive towel drying. We love incorporating this as the last step in our morning skincare routine.

Sun Bum Cool Down products including gel, lotion, spray, and mist on a white background.
What's an SPF?

The SPF (Sun Protection Factor) on a bottle of sunscreen indicates the level of protection we're getting from the sun's UVB rays—which are the sun rays most commonly responsible for sunburns and skin cancer.

How SPF Is Calculated and Why Does It Matter?

SPF, which stands for Sun Protection Factor, has been used for decades to determine the level of protection someone can expect from the sunscreen they use. It can often vary from person to person given multiple factors such as testing methods and environmental factors. In addition, everyone’s skin is different, which can also affect what kind of SPF is best suited to fit their individual needs.

A common misperception is that the SPF number on a bottle signifies the amount of time you can spend in the sun without getting burned (30 minutes for SPF 30, 50 minutes for SPF 50 etc.) This is not accurate. In fact, the SPF rating system is far more complex and based on the degree to which a certain formula protects against the sun’s harmful UVB rays over a certain period of time. For example, a sunscreen with a rating of SPF 30 allows only 3 photons per 100 to penetrate the skin, meaning it shields approximately 97% of the sun’s harmful UVB rays. This roughly translates to 30 times the protection you’d have versus using no sunscreen at all. This extends to SPF 50 (98% or 50 times the protection) and SPF 70 (98.5% or 70 times the protection). The length of time that a sunscreen will protect you from sunburn will vary based on the UV index at the time as well as other factors.

At Sun Bum, we like to think we make sun care products for everyone. So, whether your SPF preference is 30 or 50, mineral or non-mineral, lotion or spray, you can stay protected from the sun’s harmful rays. As noted by the Skin Cancer Foundation, “The best sunscreen is the one you’ll use.”

How Do Global Standards to Assess SPF Differ?

Global SPF assessment standards have been updated several times over the years, with the most recent update in 2019. The purpose of these updates—which were led by regional regulators and groups such as the International Organization for Standardization (ISO)—was to reduce the variability of SPF assessments. Currently, even the globally recognized “gold standard” SPF test — the in-vivo test known as SPF ISO-24444 — is subject to considerable variability due to the inherent human biases built into the testing process (Ruvolo, Yousefian,International Journal of Cosmetic Science, Dec. 2025). Because of this, there is an increasing call for governments and regulators to update the testing protocols and standards they recommend for manufacturers to follow — for example, using the HDRS-ISO 23698 test: an in vivo/in vitro hybrid that addresses some of the more subjective factors common with in-vivo only testing. (Ruvolo, Yousefian,International Journal of Cosmetic Science, Dec. 2025).

According to the Skin Cancer Foundation, 1 in 5 Americans will get skin cancer in their lifetime. We wanna change that.
Hypochlorous Acid Mist
$13.99