If you’re wondering what the best sunscreen for winter in Australia is, the short answer is: SolarCareB3 Defence SPF 50 with niacinamide.
The longer answer? Winter brings a different kind of challenge. It’s not just about sun protection — your skin also needs support for dryness, sensitivity, and irritation, plus help repairing sun damage that may have quietly built up over the years (or worsened after the summer just gone).
That’s exactly where Defence SPF 50 comes in. Let’s break down why.
Why winter skin needs extra support
Even in winter, your skin remains exposed to UV — particularly UVA, which penetrates clouds, glass, and even car windows. In fact, up to 80% of UV can still pass through cloud cover, meaning your skin is exposed even on cold, overcast days. Add to that the usual winter challenges — cooler air, low humidity, wind and indoor heating — and you’ve got the perfect storm for dryness, flaky or rough texture, sensitivity and redness, breakouts or irritation, and eczema or dermatitis flare-ups.
That ongoing UV exposure doesn’t just contribute to long-term sun damage — it can also weaken the skin barrier over time, leaving it even more vulnerable to winter’s drying effects. That’s why a good winter sunscreen needs to do more than block UV — it should also actively support and strengthen your skin barrier.
Why SolarCareB3 Defence SPF 50 stands out
That’s exactly what SolarCareB3 Defence SPF 50 was formulated to do — protect against daily UV exposure, while also calming irritation, strengthening the skin barrier, and simplifying your routine into one easy step.
Unlike most sunscreens, Defence contains clinical levels of niacinamide — a notoriously difficult ingredient to stabilise in SPF formulas, and very rarely seen at this strength. In fact, it took several years of research and development to bring this formula to market at a level we were happy to stand behind.
The niacinamide difference
This high-strength niacinamide does more than just help protect against UV damage. It directly supports many of the skin frustrations people experience during winter, including supporting skin barrier repair, calming inflammation and irritation, improving hydration, regulating oil production, and supporting DNA repair processes impacted by UV exposure.
By combining high SPF protection with clinical levels of niacinamide, Defence SPF 50 simplifies winter skincare — offering protection, support, and hydration in one step.
What to look for in a winter sunscreen
When choosing a sunscreen for the colder months, look for broad spectrum SPF 30 at a minimum but ideally 50, lightweight hydration, skin barrier support, non-comedogenic formulas that won’t clog pores, and products gentle enough for sensitive or irritated skin.
Defence SPF 50 delivers all of this — making it a simple, effective choice for year-round protection.
Made for Australian conditions — and regulated to world-class standards
Because Defence SPF 50 is developed and tested right here in Australia — where UV levels are among the highest globally — you can trust that it’s formulated for real-world, year-round protection. Like all Australian sunscreens, it’s also subject to some of the world’s strictest regulations to ensure every batch performs exactly as claimed.
What customers say
Many of our customers find that Defence SPF 50 simplifies their skincare routine, often replacing both moisturiser and sunscreen in one lightweight, daily step. Check out what this customer has to say. “It honestly feels like a moisturiser … ”
Complete winter skin support: build your routine
While Defence SPF 50 simplifies daily protection, many customers also like to pair it with two simple additions for extra hydration and barrier support through the colder months:
- Super B3 Serum: A lightweight serum with double-strength niacinamide (10%), superoxide dismutase and hyaluronic acid for deeper hydration and extra barrier reinforcement.
- B3 Lip Ointment: A multi-purpose formula ideal for lips, dry patches, cuticles, and any areas prone to irritation during winter.
Together, these create a simple system that allows you to layer support where needed, while keeping your routine quick, effective, and affordable.
Winter skincare doesn’t need to be complicated — just consistent, simple support.
Get SolarCareB3 Defence SPF 50 400ml or SolarCareB3 Defence SPF 50 160ml.
