Frequently Asked Questions
How does ThermaSun Mozzie Barrier work against mosquitoes?
ThermaSun Mozzie Barrier is a sunscreen that works by creating a physical barrier on the surface of your skin. The non-nano zinc oxide sits on the top layers of the skin, and together with citronella oil the formula is film-forming — helping to physically block insects from reaching your skin while it protects you from the sun. It's TGA listed as a sunscreen (AUST L 525503), the same regulatory category as ThermaSun's other zinc products.
What is citronella oil, and what does it do in Mozzie Barrier?
Citronella oil is a plant-derived essential oil works with the non-nano zinc oxide to form a film across the surface of the skin, adding to the physical barrier the zinc creates.
Is Mozzie Barrier the same as a DEET-based product?
No — Mozzie Barrier contains no DEET at all, and it's TGA listed as a sunscreen. DEET is a registered active ingredient with its own regulatory pathway, separate from sunscreen actives, and it's known to degrade the effectiveness of some sunscreen filters if mixed or layered incorrectly. Mozzie Barrier avoids that interaction issue by simply not containing DEET — instead it relies on non-nano zinc oxide and citronella oil forming a physical film on the skin's surface.
How is Mozzie Barrier's physical barrier different from other outdoor products?
Mozzie Barrier works on the surface of the skin rather than being absorbed — the non-nano zinc oxide sits on the top layers of the skin, and the citronella oil helps the formula form a film across that surface. This film-forming action is designed to physically block insects from reaching your skin while the zinc oxide provides SPF50 broad-spectrum sun protection. It's a two-in-one physical barrier: sun protection and a citronella film in a single tube.
Is ThermaSun Mozzie Barrier reef safe?
Its UV filter is 25% 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 — making Mozzie Barrier a sensible sunscreen choice for use around waterways and reef areas, independent of its citronella content.
Does Mozzie Barrier leave a white cast like other zinc sunscreens?
It's a tinted formula, using iron oxides to reduce the white cast typical of plain zinc sunscreens, giving a more natural finish for everyday outdoor wear. Warming a small amount between your fingers before applying helps it blend further. The tint is a cosmetic feature layered onto the same 25% non-nano zinc oxide SPF50 base used across ThermaSun's tinted range.
Is ThermaSun Mozzie Barrier suitable to use on kids?
It's a zinc-based sunscreen with the same TGA-assessed active as ThermaSun's other products, but it does contain added citronella oil and vanillin that aren't present in the dedicated Kids Zinc SPF50 formula, which is fragrance-free. If your child has sensitive skin or you prefer a fragrance-free option, ThermaSun Kids Zinc SPF50 is the more tailored choice. Always patch test first, and for kids without known fragrance sensitivities, Mozzie Barrier can be used following the label directions.
How often do I need to reapply Mozzie Barrier?
Reapply every two hours, and immediately after swimming, heavy sweating, or towelling off, since it's rated water resistant for 80 minutes as a sunscreen. Reapplying also refreshes the physical film that the zinc oxide and citronella oil form on the surface of your skin. Treat it the same way you would any other ThermaSun sunscreen for timing, and always follow the directions for use on the label.
What does "citronella" smell like, and will it bother sensitive noses?
Citronella has a distinctive lemony, herbal scent, commonly associated with outdoor candles and citronella-based products. If you or your family are sensitive to fragranced skincare, this is worth knowing before choosing Mozzie Barrier over one of ThermaSun's fragrance-free options like the standard Kids or Face & Body formulas. It's a noticeable but generally mild scent rather than an overpowering one.
Is Mozzie Barrier broad spectrum SPF50?
Yes, it's broad spectrum, protecting against both UVA and UVB rays, on the same 25% non-nano zinc oxide base used across the ThermaSun range. The tint and citronella/vanillin content don't change the UV filtering performance. This is confirmed under its TGA listing, AUST L 525503.
Is ThermaSun Mozzie Barrier TGA listed?
Yes, it's TGA listed (AUST L 525503) as a sunscreen. Its listing and claims relate specifically to sun protection, delivered by 25% non-nano zinc oxide that sits on the top layers of the skin. The citronella oil is included as part of the film-forming formula alongside the zinc.
Why would I choose Mozzie Barrier over a plain zinc sunscreen for camping or outdoor trips?
Mozzie Barrier gives you the same SPF50, 25% non-nano zinc oxide sun protection as ThermaSun's other tinted formulas, plus a citronella oil film that works with the zinc to create a physical barrier on the surface of your skin. That makes it a practical single tube for outdoor days when you want sun protection and a citronella film in one. Many campers keep it as their everyday outdoor sunscreen for exactly that reason.
What is the physical barrier in Mozzie Barrier made of?
The barrier is created by 25% non-nano zinc oxide sitting on the top layers of the skin, combined with citronella oil that helps the formula form a film across the skin's surface. Because non-nano zinc oxide isn't absorbed and stays on the surface, it's well suited to this kind of film-forming, surface-level action. Together the zinc and citronella help physically block insects from reaching your skin while the zinc filters UV.
Is Mozzie Barrier good value as a single outdoor tube?
At $5.99 for 100g, Mozzie Barrier is priced the same as several other ThermaSun 100g formulas, so you're not paying extra despite the citronella inclusion. We achieve this because we own our own manufacturing facility in Brisbane. You get SPF50 sun protection and a citronella oil film in one tube, at the same everyday ThermaSun price point.
Can I use Mozzie Barrier every day, or is it just for camping and outdoor trips?
It works fine as a daily sunscreen for anyone who likes the citronella scent, not just for camping — it delivers the same SPF50, 25% non-nano zinc oxide protection as ThermaSun's everyday formulas. Some people simply prefer the scent profile and film feel for outdoor days at the beach, garden, or park. If you'd rather a completely unscented daily sunscreen, Face & Body Zinc SPF50 is the fragrance-neutral equivalent.
Is ThermaSun Mozzie Barrier suitable for use around waterways, lakes, or reef areas?
Yes — its active UV filter is 25% non-nano zinc oxide only, free of oxybenzone and octinoxate. The US Government NOAA does not consider non-nano zinc oxide to be harmful to marine life, making it a reasonable sunscreen choice for camping trips near lakes, rivers, or the coast.
Does the tint in Mozzie Barrier work the same way as ThermaSun's other tinted products?
Yes, it uses iron oxide tinting in the same way as ThermaSun's Tinted Face & Body formula, reducing the visible white cast common to zinc sunscreens and adding a layer of visible-light filtering. The citronella oil and vanillin content is the feature that's unique to Mozzie Barrier within the tinted range. Both the tint and the citronella film sit on top of the same core SPF50, 25% non-nano zinc oxide base.
Is ThermaSun Mozzie Barrier Australian made?
Yes, it's manufactured in Rocklea, Brisbane, and TGA listed (AUST L 525503). Being Australian made also means it's manufactured in a TGA approved facility using an active ingredient from a TGA approved manufacturer. This applies to the sunscreen claims on the product.
How is Mozzie Barrier different from ThermaSun's plain Tinted Face & Body sunscreen?
The core formula — SPF50, 25% non-nano zinc oxide, iron oxide tint, 80-minute water resistance — is essentially the same, with Mozzie Barrier's distinguishing feature being the addition of citronella oil and vanillin that help form a film on the skin's surface. Choose Mozzie Barrier if you want that citronella oil film alongside your sun protection; choose the standard Tinted Face & Body if you'd prefer a fragrance-neutral tinted sunscreen. Both share the same sun-protection performance as TGA-listed zinc sunscreens.
Always read the label and follow the directions for use.
