Orange Sunsiki Hot Block SPF 50 sunscreen stick on a white background

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Man using an orange asthma inhaler with a blurred natural background

Sunski Hot Block sunscreen stick with green leaves in the background

Person holding an orange SPF product with text about protection and features.

Woman applying sunscreen outdoors with palm trees in the background

Product with text highlighting ingredients and benefits on a white background

Person holding a red Sunski hot block in a sunlit setting

Two Sunsiki Hot Block mineral sunscreen sticks on a white background

Hand holding a Sunski sunscreen stick with application instructions on a natural background

Why We Love It

Sunski Hot Block sunscreen stick held by a hand with flowers in the background

Hot Block is your high-performance sunscreen stick for peak sun moments. Our portable formula offers a precise application that glides on easily and stays put. No spills, no mess – just quick, targeted protection for high-exposure areas. Bonus: Hot Block won't make you look like a ghost, either.

Broad Spectrum SPF 50 protection
Portable, mess-free stick format
Ideal for targeted application
Designed for high-intensity sun exposure
Easy on-the-go reapplication

Hot Block is your high-performance sunscreen stick for peak sun moments – targeted, mess-free protection designed for heat, movement, and effortless on-the-go reapplication.

Why We Made It

Some moments demand more protection – intense sun, long exposure, no time to slow down. Hot Block was built as your always-on-hand solution, so you can protect what matters most, exactly when you need it.

Why We Love It

A portable formula for precision application that glides on easily and stays put. No spills, no mess – just quick, targeted protection for high-exposure areas.

How It Feels

Smooth, melt-on contact with a clean, controlled application. Easy, quick, and effortless.

Use SPF generously on all exposed skin — your face, neck, ears, and anywhere the sun hits you.

Our Hot Block high-performance sunscreen stick was made for peak sun moments on the go! Glide it on. Get outside.

Hot Block's mineral SPF 50 keeps skin protected from surf to summit. No chalkiness, no mess — just smooth, steady coverage built for pockets, packs, and every sun-soaked adventure.

Apply:

As the final steps in your morning routine, apply liberally and evenly 15 minutes before heading outside
Reapply every 40 minutes when swimming or sweating, Immediately after towel drying, or at least every 2 hours

Sunflower Seed Wax

Creates a breathable protective layer that helps lock in moisture and reduce dryness, especially in high-friction or high-exposure conditions.

Safflower Seed Oil

Rich in linoleic acid, which helps nourish the skin barrier and maintain softness and flexibility when skin is exposed to dry air, sweat, or movement.

Rice Germ Extract

Delivers antioxidant and conditioning benefits that help support skin elasticity and hydration, keeping skin feeling supple and balanced throughout the day.

Active Ingredients

Zinc Oxide 17.53%

Inactive Ingredients

C12-15 Alkyl Benzoate, Caprylic/Capric Triglyceride, Helianthus Annuus (Sunflower) Seed Wax, Isostearyl Isostearate, Tribehenin, Diisostearyl Malate, Butyloctyl Salicylate, Silica, Octyldodecanol, Carthamus Tinctorius (Safflower) Seed Oil, Polyhydroxystearic Acid, Stearalkonium Bentonite, Glycine Soja (Soybean) Oil, Hesperethusa Crenulata Bark Extract, Calcium Aluminum Borosilicate, Isostearic Acid, Polyglyceryl-3 Polyricinoleate, Lecithin, Caprylyl Glycol, Propylene Carbonate, Polyglyceryl-3 Diisostearate, Oryza Sativa (Rice) Germ Extract, Oryza Sativa (Rice) Extract, Ethylhexyl Palmitate, Trihydroxystearin, Sodium Hyaluronate, Glucomannan

When should I use Hot Block instead of SPF lotion?

Hot Block is ideal for on-the-go use and targeted protection — especially for high-exposure areas like your nose, cheeks, and ears, or when you need quick reapplication during outdoor activities. Pairs perfectly with Sol Power, made for daily sun protection at the start of your day.

Can I use Hot Block on my face?

Yes. Hot Block is designed for targeted use on the face and other exposed areas. Its stick format allows for quick, precise application wherever the sun hits you.

Is it easy to reapply throughout the day?

Very. The stick format makes reapplication simple, mess-free, and portable — so you can use it anytime, anywhere, without needing a mirror or getting sunscreen on your hands.

Will it feel heavy or waxy on my skin?

No. Hot Block is designed to glide on smoothly and feel comfortable on the skin, delivering protective coverage without a heavy or greasy finish.

How often should I reapply Hot Block?

Reapply every 40 minutes when swimming or sweating, Immediately after towel drying, or at least every 2 hours.

Is Hot Block reef safe?

“Reef safe” isn’t a regulated term and can be misleading. Instead of relying on marketing language like "Reef Safe", we focus on creating high-performance FDA-compliant sunscreens with thoughtfully selected ingredients designed to work across the full range of outdoor conditions. Some Hawaiian islands have legislation prohibiting non-mineral sunscreen. Fortunately, Hot Block is a mineral sunscreen, so it is compliant throughout all of Hawaii.

Person applying sunscreen to another person's face outdoors.

Glide on and get out there

Finally, a stick that doesn’t scrape or feel like a hair removal device! Hot Block offers a smooth, melt-on contact with a clean finish. Easy, quick, and effortless.

Close-up of a person wearing a backpack with a 'Sunski' card in the pocket, surrounded by yellow flowers.

Compact for high exposure on-the-go

Our ultimate product test was "is this easy to use on a chairlift with big gloves?" A slim form factor and easy-twist handle makes it a breeze to wear.