It’s one of the most challenging conditions to treat, hyperpigmentation (the over production of melanin resulting in darkened areas of the skin), and unfortunately, happens to be one of the most common. Thanks to our outdoor lifestyle and its link to UV exposure, many Australians suffer from pigmentation that typically presents on the face, neck and décolletage. Pigmentation conditions can affect us from our teen years but usually become more noticeable and persistent as we age. There are many causes - hormonal influences (such as taking the pill or embarking on HRT), genetics, inflammation, heat and or injury to the skin can all cause hyperpigmentation. Its important to understand the ways in which you can reduce your risk, the simplest of which, is choosing the right sunscreen.
Melasma is an inflammatory disorder that typically appears in symmetrical blotchy hyper-pigmented patches on the face - usually the cheeks, bridge of the nose, forehead, chin and upper lip. Exacerbated by sun exposure, hormonal changes, genetics or general skin irritation, it is extremely common and notoriously difficult to treat due to its recurring nature.
Given the strong link between melasma flare ups and UV exposure, sufferers must be adept at the application and reapplication of a sunscreen. In a flooded market that offers both physical and chemical variations, it can be hard to find one that’s right for you. The first step is to under-stand the difference between both physical and chemical sunscreens and what they offer. At the very least, we recommend daily application of a broad-spectrum SPF 30+.
SO, WHAT IS THE DIFFERENCE BETWEEN PHYSICAL AND CHEMICAL SUNSCREENS?
Physical sunscreens sit on the surface of the skin creating a barrier or shield and reflects the UV rays, which is why they’re often referred to as physical blockers. They do this via mineral filters, the most common of which are titanium dioxide and zinc oxide. Unlike their chemical counter-parts, they don’t penetrate through the surface of the skin. Chemical sunscreens contain active sun filters that penetrate the skin and absorb the UV rays to prevent them from causing damage. In short, physical sunscreen = reflect. Chemical sunscreen = absorb.
WHICH IS BETTER FOR MELASMA SUFFERERS?
Melasma sufferers should opt for a physical sunscreen. This is due to its ability to prevent heat within the skin, unlike chemical sunscreens that can increase the skins temperature when absorbing UV rays. Zinc is also a powerful anti-inflammatory ingredient. Recent studies have shown that the efficacy of physical sunscreens can be taken one step further by including iron oxides. Iron oxides offer the added protection against all light wavelengths, including blue light.
If you are investing in treatment for your pigmentation, it is important to support this with at home skincare. We suggest discussing sunscreen options with your practitioner for the best out-come.