Mineral Zinc SPF 50+

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Size: 30g

Size Chart

AUS 6 8 10 12 14 16
UK 6 8 10 12 14 16
USA 2 4 6 8 10 12
EUROPE 32 34 36 38 40 42


Measurement Chart (cm)

Chest 76 78 82 86 90 94
Waist 62 64 66 70 74 80
Hip 80 82 86 90 94 98
Suit Length 68 70 72 74 76 78
Arm Length 61 63 65 67 69 71


Chest: measure the fullest part of your bust

Waist: this measurement is taken just under your ribcage

Hip: measure around the fullest part of the hips

Suit Length: the bottom seam between the legs, to neck seam

Arm Length: top of the arm to wrist seam

Choose from two convenient sizes: 30g (1oz) or 75g (2.6oz)

Only 12 left!
FREE SHIPPING $180+ AUD (express avail.)

Our Mineral Zinc SPF 50+ sunscreen was formulated with the highest quality, non-toxic ingredients and comes in earth-friendly packaging to keep you and our planet protected for years to come.


Created with care and intention, our non-toxic zinc sunblock is safe for all skin types and provides superior sun protection. Mineral-based sun filters reflect UVA & UVB rays for broad-spectrum protection from harmful rays.


Zero chemicals - 100% plant based ingredients

Reef-safe formula to preserve our oceans

Non nano zinc oxide for peace of mind

Earth-friendly packaging to respect Momma Earth

Hypoallergenic formula to suit sensitive skin

Matte finish with tinted glow for minimal white cast

Broad-spectrum protection against UVA & UVB rays


Our Mineral Zinc SPF 50+ sunscreen was created to check all the boxes. We’ve crafted a zinc sunscreen that’s safe, lightweight in texture, gentle in application, and long-lasting in coverage.

We needed a natural sunscreen that could provide superior protection, without the thick, greasy coverage or chemical-filled ingredients. We wanted something gentle on our skin, kind to the planet, and effective for long days in the harsh sun.

Sunscreen is meant to be worn every day, but we’ve never seemed to find one that checks all the boxes and left us feeling confident in the companies we were supporting until now.

Perfectly compact, this zinc sunblock is just the right size for on-the-go, running out the door, or traveling. Always be prepared for time in the sun with a tin in your beach bag, car, or pocket.

OSB’s Mineral Zinc Sunscreen goes on smooth, locks in moisture, and restores the skin’s natural barriers with its nourishing ingredients. Beachside, poolside, or out running errands, our natural zinc sunblock is your skin’s new best friend. Wherever you go, this non-toxic mineral sunscreen is perfect for keeping that beautiful face young, healthy, and sun-burn-free!

Not to mention, you can do good for others because 10% of every purchase gives back to the beautiful culture of Bali, supporting and sustaining those who need it most.

Ingredients: Zinc Oxide (sun protection agent), Cocos Nucifera (coconut oil), Cera Alba (beeswax), Microcrystalline Wax (petroleum-based wax), Theobroma Cacao Seed Butter (cocoa butter), Caprylic/Capric Triglyceride (emulsifier and skin-nourishing agent), Titanium Dioxide (sun protection agent).

UVA & UVB Broad Spectrum.
SPF 50+
100% Mineral Based.
Fragrance Free.
Reef Safe.

We ship worldwide from Bali & Australia. Any item below $180 will attract a shipping fee, as with any bulky items.

All orders will be processed Mon-Fri, within 24 hrs upon receipt of payment and sent on the following business day.

Regular International parcels take approximately 3 weeks. An express shipping option is available at checkout and will take up to 7 days for delivery, depending on location.

Please read more of our Shipping Policy here.

To keep your swimwear happy and healthy, please follow our general care guidelines:

Our suits are happiest when hand-washed separately in cool water so the colours do not bleed. Please avoid traditional washers and abrasive materials like velcro and bleach. Air dry in a shady spot.

Customer Reviews

Based on 1 review
Love this brand!

I brought a few different suits and a bag and the zinc! Love all of them! So happy. the zinc is so nice on the skin!

Recycled Materials
UPF 50+ Protection
Luxuriously Soft Fabric
Made With Love

Perfect two piece cut

Our two piece bikinis are made with a luxurious sustainable buttery soft fabric. 
They are the perfect intersection of sporty and fashionable.  With a comfortable seamless design, both functional and flattering and a tailored feminine design that is suitable for leisure or athletic activities.

Designed for comfort

We’ve designed our swimsuits for comfort right down to the smallest detail. The luxuriously soft fabric, double lined, with innovative cupless support and smooth seams will hold you in and support you, with all your water activities.

Sustainable Swim

We value slow fashion over fast with a focus on sustainable fabrics and ethical production. Crafted from regenerated nylon that is designed to last twice as long as your regular swimsuit. Our swimwear is designed & made in Bali with love, with 10% of each sale donated to those in need through our Giving Back initiative.