Frequently Asked Questions
Why does Work-Shield Pro have 40% zinc instead of the usual 25%?
Work-Shield Pro is formulated at 40% non-nano zinc oxide — double the concentration used in most Mineral Sunscreens on the market — specifically for tradies and outdoor workers who face many hours of continuous sun exposure on the job. The higher concentration gives a heavier, more robust barrier suited to all-day worksite conditions rather than casual weekend wear. It's rated SPF50+ and TGA listed (AUST L 525315).
Should tradies treat sunscreen as part of their PPE?
Yes — sun protection is increasingly treated as a standard part of outdoor workplace safety, alongside hats and protective clothing, given how much cumulative UV exposure tradies get over a career (SafeWork NSW). Work-Shield Pro is built for that context, with a heavier 40% zinc formula and SPF50+ broad-spectrum rating for people who can't just duck inside when the sun's harsh. Employers running outdoor crews often build a broad-spectrum, water-resistant sunscreen into their standard site safety gear.
Will one application of Work-Shield Pro Zinc SPF50+ last a full work shift?
No single sunscreen application lasts an entire 8-plus-hour shift — Work-Shield Pro should be reapplied roughly every two hours, and sooner after heavy sweating, to maintain SPF50+ protection through a full workday (SafeWork NSW). Its 40% zinc concentration gives a heavier starting barrier, but reapplication is still essential for tradies on long outdoor shifts. Keeping a tube in the site first-aid kit or ute is a practical way to build this into the workday. Always follow the directions for use on the label.
Is Work-Shield Pro Zinc SPF50+ better than a standard SPF50 sunscreen for outdoor workers?
It's formulated with 40% zinc oxide, double the concentration of ThermaSun's standard SPF50 formulas, giving a heavier and more robust barrier suited to full-day outdoor work rather than short leisure exposure. Both are broad-spectrum and water resistant, but Work-Shield Pro is purpose-built for the tradie and worksite use case. For casual daily wear, a standard 25% zinc formula like Face & Body is generally sufficient.
Is Work-Shield Pro Zinc SPF50+ water resistant for a full day of manual labour?
It's rated water resistant for 80 minutes, meaning it holds its SPF through that period of sweating or water exposure, not an entire shift. For manual labour involving heavy, continuous sweating, reapply more frequently than the 80-minute mark to stay properly protected — treat sweat like water exposure. No sunscreen is waterproof, regardless of zinc concentration.
Is Work-Shield Pro Zinc SPF50+ TGA listed and tested to Australian standards?
Yes, it's TGA listed (AUST L 525315) and manufactured in Rocklea, Brisbane. Being Australian made also means it's manufactured in a TGA approved facility using an active ingredient from a TGA approved manufacturer. For safety-conscious worksites, checking the AUST L number on any sunscreen label is a straightforward way to confirm it's a genuine, tested therapeutic good rather than an unregulated cosmetic-only product.
Does Work-Shield Pro Zinc SPF50+ leave a heavier white residue than regular zinc sunscreen because of the 40% zinc?
It can leave a more visible cast than a 25% zinc formula, simply because there's more active mineral content in the mix — this is a reasonable trade-off for the added protection density tradies need. It's not designed as a cosmetic, everyday-wear product; it's built for function on the job. Warming it between your hands before applying to the face, neck, and arms helps spread it more evenly.
Does Work-Shield Pro Zinc SPF50+ work under work gloves, boots, and long sleeves?
Apply it to all exposed skin not covered by PPE — typically the face, neck, ears, and hands — since clothing and gloves already provide a physical barrier where they cover skin. It's worth reapplying to hands specifically if gloves come on and off throughout the day, as friction and sweat under gloves can wear sunscreen away faster. Long sleeves and a broad-brim hat combined with Work-Shield Pro on exposed areas gives the most complete coverage.
Is Work-Shield Pro Zinc SPF50+ reef safe for workers near waterways or marine sites?
Yes, its active filter is 40% non-nano zinc oxide only, with no oxybenzone or octinoxate. The US Government NOAA does not consider non-nano zinc oxide to be harmful to marine life, and Maui County in Hawaii only allows the use of mineral sunscreens to protect their reefs — relevant for workers on marine construction, aquaculture, or coastal infrastructure sites.
Which areas of the body does Work-Shield Pro's 40% zinc concentration matter most for on a work site?
The 40% concentration gives the biggest practical benefit on the areas that get the most continuous, unbroken sun exposure during a shift — the back of the neck, ears, forearms, and face — where tradies typically see the most sunburn over a career. It's also worth applying generously across the shoulders and lower legs for anyone working in shorts or a singlet. Because it's a heavier-duty formula, a thinner layer than usual still delivers solid coverage, but an even, deliberate application across these high-exposure areas matters more than the concentration number alone.
Is a 40% zinc sunscreen safe to use on skin every day?
Yes, zinc oxide is one of only two UV filters the FDA recognises as safe and effective (GRASE), and non-nano zinc particles remain on the skin's surface rather than being absorbed, regardless of whether the concentration is 25% or 40%. Work-Shield Pro's higher concentration is about protection density for demanding outdoor work. It contains no chemical UV filters at all.
Is Work-Shield Pro Zinc SPF50+ good value for tradies who need sunscreen every workday?
At $5.99 for 100g, and with a 1kg pump also available for crews, Work-Shield Pro is priced to make daily on-the-job reapplication affordable rather than a cost tradies skip to save money. We achieve this because we own our own manufacturing facility in Brisbane. It delivers 40% non-nano zinc oxide without the premium pricing some "pro" or "trade" branded sunscreens carry.
Does Work-Shield Pro Zinc SPF50+ sting if it gets in your eyes on a windy or sweaty site?
Like most zinc sunscreens, it's designed without chemical UV filters, which tend to be the bigger cause of eye stinging, though any sunscreen running into the eyes with sweat can cause some irritation. Applying carefully around the eye area and hairline, and wiping sweat away rather than letting it run, reduces this risk. Rinse with water if irritation occurs on site.
Can Work-Shield Pro Zinc SPF50+ be used on the whole body, or just exposed work areas?
It can be used on any exposed skin, though for most tradies the priority areas are the face, ears, neck, forearms, and hands — the parts not covered by work shirts, gloves, or boots. Sunburn on the back of the neck and forearms is extremely common for outdoor workers, so those areas deserve deliberate attention each application. A full-body approach is fine for weekend outdoor work too.
Is Work-Shield Pro Zinc SPF50+ broad spectrum?
Yes, it's broad spectrum SPF50+, protecting against both UVB and UVA rays, which is important for tradies given the cumulative, career-long UV exposure outdoor work involves. Zinc oxide is naturally broad spectrum, and the 40% concentration adds density to that protection. This is confirmed on the label under its TGA listing.
Why would a worksite supervisor choose Work-Shield Pro over a standard supermarket sunscreen for the crew?
Work-Shield Pro's 40% zinc concentration and SPF50+ broad-spectrum rating are specifically formulated for continuous outdoor work exposure, and it's available in a 1kg pump for shared crew use, which most supermarket sunscreens aren't set up for. Treating sunscreen as PPE means choosing a formula and format built for daily, communal, high-volume use (SafeWork NSW). It's also TGA listed and Australian made, which can matter for workplace safety documentation.
Is Work-Shield Pro Zinc SPF50+ suitable for use in extreme heat and full sun conditions typical of Australian summer worksites?
Yes, it's formulated specifically with that use case in mind — SPF50+ broad-spectrum protection at a heavier 40% zinc concentration for long, continuous outdoor exposure in Australian conditions. Heat itself doesn't reduce sunscreen effectiveness, but it can make people sweat it off faster, which is why frequent reapplication matters more in extreme heat, not less. Storing the tube out of direct sun (not left baking in a ute) also helps preserve the product, and you should discard it if left open for over 12 months.
How is Work-Shield Pro Zinc SPF50+ different from ThermaSun's standard Face & Body Zinc SPF50?
The key difference is zinc concentration — Work-Shield Pro uses 40% non-nano zinc oxide versus 25% in Face & Body — giving it a heavier, more protective barrier suited to demanding, all-day outdoor work rather than everyday casual use. Both are broad spectrum, water resistant for 80 minutes, and TGA listed. Choose Work-Shield Pro specifically if you're on the tools outdoors for a full shift most days.
Is Work-Shield Pro Zinc SPF50+ available in a bulk size for worksites?
Yes, it's also sold as a 1kg pump specifically designed for crews and worksites that need a shared, high-volume sunscreen supply rather than individual small tubes. The 1kg pump uses the same 40% zinc, SPF50+, TGA-listed formula (AUST L 525315) as the 100g tube. It's a practical way for a supervisor or business to stock sun protection for an entire team — store the pump out of direct heat on-site, such as in a site shed or esky, rather than on a dashboard or ute tray in full sun.
Is Work-Shield Pro Zinc SPF50+ vegan and free from chemical UV filters?
Yes, it's formulated with no chemical UV filters at all — its only active is 40% non-nano zinc oxide — and it's made by VeganicSKN as a vegan product. For tradies who want a straightforward, chemical-filter-free sunscreen for daily on-the-job use, this keeps the ingredient list simple. It's manufactured in Brisbane under the same TGA oversight as the rest of the ThermaSun range.
Always read the label and follow the directions for use.
