Chemical vs Physical sunscreen


Did you know that UV radiation is one of the biggest external contributors to photo-ageing? Scientific studies are ongoing, but scientists have found that ultraviolet rays have an undeniable ageing effect on every layer of the skin. Often the exposure that leads to skin damage takes place over many years and the skin that is affected is visibly defined by fine lines and deep wrinkles, roughness, dryness, laxity, spider veins and hyperpigmentation. Fortunately, not all is lost,  studies have also found that the regular application of sunscreen can help delay the effects of the sun’s rays and keep premature ageing at bay. Choosing a sunscreen is not always the easiest task, so we’ll help break it down for you.

Chemical vs Physical

Sunscreens are usually available in three different formulations – physical, chemical or a combination of the two. With chemical sunscreens, it’s important to apply the product 20 minutes before going into the sun as it needs to be absorbed by the skin in order for it to work. This is problematic for many reasons- For one, sun protection should be reapplied every two hours depending on your activity, therefore, if you’re active outside, it’s not always possible to seek out shade and to wait 20 minutes after applying sunscreen to go back into the sun. Though chemical sunscreens are effective, it works on the principle that the chemicals in the skin absorb the UV rays. This causes the chemicals to breakdown and they may become volatile and irritating to the skin. There’s also mounting evidence that certain chemical sunscreens are polluting water and causing coral reefs to die.

Next, we have physical sunscreens, which is our preferred formulation, as you might have guessed. Physical sunscreens do exactly what the name says and mainly consist of zinc and/or titanium oxide – they physically block the UV rays from penetrating the skin by creating a reflective barrier. The zinc and titanium oxide don’t need to be absorbed, so it’s effective immediately, non-irritating and it protects against both UVA and UVB rays (broad-spectrum). Physical sunscreens, like chemical sunscreens, also need to be reapplied regularly but that’s why Colorescience® has developed a range of products that can easily fit into your lifestyle, be layered on top of each other and easily reapplied. Every product is also formulated with added antioxidants and rich hydrating ingredients that help keep your skin healthy and happy. 

Layering & Reapplying


Your sun protection cream is the last product that you apply before starting with your makeup, we suggest trying the Colorescience® Sunforgettable Total Protection Face Shield SPF50. The formulation creates an invisible layer of broad-spectrum protection that can be used on any skin tone and won’t create an ashy cast.


Next, you can prep the skin with the Colorescience® Brightening Perfector Face Primer SPF20 that instantly illuminates and evens out the skin. For added coverage, you can follow up with the Colorescience® Tint du Soleil™ SPF30 UV Protection Foundation or skip right to our award-winning Loose Mineral Foundation brush.


The Colorescience® Sunforgettable® Brush-on Mineral Sunscreen SPF 30 has been awarded numerous beauty accolades for its effectiveness and easy application. Use the powder brush to mattify, protect and give extra coverage. The Sunforgettable® Brush-on Mineral Sunscreen SPF 30 is easy to apply and mess-free. Keep it in your bag and reapply throughout the day to keep sun damage and shine at bay. 

You can browse and shop the full range of Colorescience® products on DermaGuru. 

Posted in Anti-Ageing, SKIN REJUVENATION, Sun protection.