Sun Damage Is Cumulative
What Australian Skin Needs to Know About Daily UV Protection
If there's one piece of skin care advice with more evidence behind it than any other, it's daily, consistent sun protection. It isn't glamorous and it isn't new, but for skin living under the Australian sun, it's the single most important thing you can do in your skincare routine.
At The Derm Clinic, photo-protection is a foundational part of every personalised treatment plan. Here's why.
The Australian context matters
Australia has one of the highest UV indices in the world. In northern New South Wales, UV levels reach 3 or above (the threshold at which sun protection is recommended) for most of the year, including outside summer months. Cloud cover doesn't reliably block UV, and incidental exposure . Those few minutes between the car and the front door, the time spent near a sunny window, the morning walk - adds up over years.
This is why we approach sun protection as a daily routine rather than a seasonal one.
UVA and UVB do different things
UV radiation comes in two main wavelengths relevant to skin:
UVB is responsible for sunburn and is the primary driver of DNA damage in the outer skin layers. It's strongest in the middle of the day and varies more with season.
UVA penetrates deeper into the dermis. It contributes to changes in collagen and elastin over time, and is implicated in pigmentation concerns including melasma. UVA passes through standard window glass and is present at relatively consistent levels throughout daylight hours.
A "broad-spectrum" sunscreen is one that protects against both. In Australia, products marketed as sunscreens with therapeutic claims are regulated by the TGA and listed on the Australian Register of Therapeutic Goods.
The cumulative nature of photo-damage
The visible signs we associate with skin ageing- pigmentation, textural change, loss of elasticity, vascular changes, are largely driven by accumulated sun exposure over decades, not by the passage of time alone. This is why photo-damage often becomes visible years after the exposure that caused it.
Skin imaging at your initial consultation can help differentiate between intrinsic skin change and photo-damage. That distinction matters because it shapes what's realistic to address, and how.
What we recommend in clinic
Personalised photo-protection advice is part of every initial consultation. Factors we consider include:
• Your skin type and any reactivity or sensitivities
• The presence of pigmentation concerns or melasma
• Your daily routine and how long you spend outdoors
• The other products in your routine and how they layer
• Whether you're undergoing any in-clinic treatments that affect photo-sensitivity
There's no single "best" sunscreen , just the right one for your skin and your everyday life.
Skin health is a long game
The work you do today- the daily SPF, the reapplication, the treatment plan, is what your skin will reflect back to you in five, ten, twenty years. It isn't dramatic and it isn't immediate. It's quietly, consistently protective.
That's the part of skin health we care about most: the long, considered approach that supports your skin as it evolves.
If you'd like a personalised assessment of your skin and a routine that fits the life you actually live, an initial consultation at The Derm Clinic is where we start.