Signature SPF 50 Mineral Lotion

Signature SPF 50 Mineral Lotion

Our high-performance, non-nano zinc mineral sunscreen offers the very best broad spectrum protection to those who play hard in the water and sun.

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More About This Product

Why We Made This

We developed our Signature sport sunscreen line for those stay-all-day days. Our premium, non-nano zinc mineral sunscreen won’t run into your eyes or come off during the most rigorous activities in the water, wind, or blazing hot sun. Sized to travel in your carry-on (because we don’t check luggage).  

Sun Bum Signature is used and trusted by many lifeguard and beach rescue organizations throughout the U.S., including the Hawaiian Water Patrol, the North Shore Lifeguard Association, and the Eastern Surfing Association. 

Trust The Bum® 

  • Non-nano zinc mineral protection 
  • High performance 
  • Seriously water resistant   
  • Won’t run into your eyes  
  • Fragrance free 
  • Hawaii Act 104 Compliant: Made without Oxybenzone & Octinoxate 
  • Vegan 
  • Cruelty Free 
  • Gluten Free 
What's Inside

Active Ingredient:  Zinc oxide 21% 

 Inactive Ingredients:  water, ethylhexyl palmitate, caprylic/capric triglyceride, butyloctyl salicylate, capryloyl glycerin/sebacic acid copolymer, cetearyl alcohol, microcrystalline cellulose, coco-glucoside, ethylhexyl- glycerin, isostearic acid, lecithin, phenoxyethanol, polyglyceryl 3 polyricinoleate, polyhydroxystearic acid, pongamia pinnata seed extract 

The Good Stuff:

Vitamin E:An antioxidant that helps to neutralize free radicals, which are the main cause of premature skin aging

How To Use

Apply liberally 15 minutes before sun exposure. Reapply: After 80 minutes of swimming or sweating. Immediately after towel drying. At least every 2 hours.

Drug Facts

Warnings

  • For external use only.
  • Do not use on damaged or broken skin.
  • When using this product keep out of eyes. Rinse with water to remove.
  • Stop use and ask a doctor if rash occurs.
  • Keep out of reach of children. If swallowed, get medical help or contact a Poison Control Center immediately.

Directions

  • Shake bottle well.
  • Apply liberally 15 minutes before sun exposure
  • Reapply:
    • after 80 minutes of swimming or sweating
    • immediately after towel drying
    • at least every 2 hours
    • children under 6 months of age: ask a doctor
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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.

Collection of sunscreen products including lotion, face stick, lip balm, and face stick on a white background.
People sitting in water with a scenic background of trees and blue sky.
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.

We've Got Answers

Does Mineral Sunscreen Clog Pores?

Nope! Mineral sunscreen sits on your skin instead of soaking into it, which means it won’t clog your pores or make you break out. In fact, zinc oxide (one of the main ingredients) is actually pretty rad for acne-prone skin—it helps calm inflammation and redness. So whether you’ve got sensitive skin or just don’t want to risk waking up with a surprise breakout, mineral sunscreen’s got your back.

Can You Still Tan With Mineral Sunscreen?

Yep, kinda. Mineral sunscreen blocks most of the UV rays that burn your skin, but a little bit of UVA still gets through, which means you might get a slight tan over time. But here’s the thing—tanning is still sun damage, even if it looks good in the moment. If you love that sun-kissed glow, keep in mind that it can also lead to wrinkles and sun spots over time.Play it smart, wear your sunscreen, and maybe just go for a bronzer instead.

Can I use this on my face?

Yes, you can totally use our Roll-On Lotion on your face. It's non-comedogenic, so it won't clog pores. And if you're sensitive to scents, this Fragrance Free sunscreen option works great for the face.

Overall rating: 4.5333333 / 5 from 75 reviews.

AI Generated Review Summary

The Signature SPF 50 Sunscreen Lotion provides broad spectrum protection without irritating the skin, though opinions on the size vary.

Summary topics

  • Packaging Size: 13%
  • Skin Irritation: 13%

Review topics: ["size","fit","design","sunscreen","skin","coverage","protection","smells","container","sun","water","fragrance","eyes","face","top","body"].

Review highlights

  • "For those of you that don't like skin cancer or alligator skin, this is the product to use."Thomas S.
  • "Otherwise no stinging, no scent, size is perfect for putting in my purse, and gives me that sense of security."Deniz V.
  • "The best face sun screen for acne prone skin"Abigail M.

Reviews

Good stuff! Zinc based and

"Good stuff! Zinc based and works well. I wish it was in a bigger container than 3oz."

Michael J. (5/5)

WORKS GREAT! LOVE THE EASY

"WORKS GREAT! LOVE THE EASY POCKET DESIGN!"

Harvey H. (5/5)

Love this! Perfect for cycling

"Love this! Perfect for cycling and any outdoor endurance sport. This is my 3rd bottle."

Jarred B. (5/5)

Best sunscreen I have found

"Best sunscreen I have found for my face when I golf. Stays effective the whole round, and no stinging in my eyes."

Jeremiah S. (5/5)

Received the product as promised

"Received the product as promised on time It's the only sunscreen that I can use on my face that has never caused irritation to my eyes"

Behzad A. (5/5)

Love, love, love this sunscreen!

"Love, love, love this sunscreen! Can put it close to eyes and it does not make them sting!!! Excellent!"

Mellanie T. (5/5)

Momma approved

"So as a Florida momma with an autistic child who loves the water as much as I do, this sunscreen is a game changer. It goes on smooth without being greasy at all. It absolutely stays put and does not end up in your eyes which is essential for my son because he is constantly wiping the water off of his face and never has he ended up with it in his eyes or had that awful sunburn under his eyes. We spent hours in the water and whether is was saltwater or the chlorinated high speed water at the waterparks, it did it's job with zero sunburn. I am a costumer for life."

Lana (5/5)

Love the strength of this

"Love the strength of this block. Lasts through hours of very active play in 95+ heat and August humidity. Goes on white but clears up shortly thereafter. Planning to purchase many more bottles!"

Michelle N. (5/5)

Bought this for my son

"Bought this for my son because his job keeps him outside most of the day. This handy size fits in a pocket within reach for reapplication and protection. I have had this size myself and loved the convince of it. Plus it’s SPF 50!!! Can’t beat that."

Joanne W. (5/5)

Really like the product. Dries

"Really like the product. Dries clear very quickly. Stays in place. Water resistant. Very convenient size and shaped container."

Bart B. (5/5)

Q&A

Hi, can this prevent tanning completely? Meaning, won't see any tan lines at all.
Hi Jean, thanks so much for reaching out! We can't guarantee that this product will defend you from mother nature's tan lines, but we can assure you that it will do its best to protect you. If you are looking for optimal protection, and ways to avoid those tan lines, we would definitely recommend our Mineral Line of products. Mineral-based Zinc sits on top of skin and acts as a physical block barrier to the sun’s harmful rays. The ingredients in our Original line act as filter- these ingredients soak into your skin and act as a screen, letting you get a little color while still protecting you. It all comes down to personal preference, whether you want a physical block, or a screen to let in a little color. If you have any other questions, feel free to reach out to us on our contact page :) xo, SB
Can this be used for running?
Hi there, thanks so much for reaching out. You can definitely use our Signature sunscreens for running. We would even recommend it :) Our Signature products are sweat & water resistant, so they are your best bet when you are out playing in the sun! xo, SB
Hi, is this suitable for all types of skins?
Hi Renee, thanks so much for reaching out! Yes, this product is made with all skin types in mind. It is also fragrance free which makes it gentler for those with more sensitive skin :) xo, SB
Can this small pocket size bottle be refilled by yourself?
Hi Jacob, thanks so much for reaching out! We would recommend grabbing a fresh bottle just to make sure that you are getting optimal protection from the active ingredients. If you are going to refill your bottle, we would suggest rinsing it out to ensure that there isn't any leftover product in it before refilling it :) xo, SB
IS THIS PRODUCT FOR MALE?
Hey Nathalia, thanks for reaching out! Our products are made for everyone to enjoy! Feel free to reach out to us on our contact page if you have any questions! XO, SB
Signature SPF 50 Mineral Lotion
$20.49