What is the difference between physical and chemical sunscreens?
When it comes to skincare, one bit of advice I always recommend is to wear sunscreen. It should be a daily habit like any other – not just when the sun comes out!
I’m here to explain the importance of suncare, the different types of sunscreen, the differences between them, and which ones I recommend being the safest and most effective.
It’s important to find the right sunscreen that is going to give you maximum protection, whilst also complimenting your skin.
Why should I use sunscreen every day?
- Slows down ageing – UV rays break down collagen and elastin (which is what makes our skin youthful and plump). When it becomes accelerated, this causes skin laxity, sagging and fine/deep lines and wrinkles.
- Prevents skin cancer – Skin cancer (also known as Melanoma) is one of the most common forms of cancer in the UK, with approximately 17,500 cases diagnosed every year. But when detected early, it can be the easiest form to treat and increase survival rates by 80%. Sunscreen helps to prevent this risk!
- Prevents skin discolouration – UV exposure leads to an overproduction of melanin which causes dark patches and uneven skin tone.
- Constant exposure – we are always exposed to the elements – whether you’re indoors on a gloomy cloudy day or outside on a beautiful sunny day, sunscreen always helps to protect us!
What to look for in your sunscreen
- If you have an outdoor lifestyle/high sun exposure – physical sunscreens have longer-lasting protection and are instantly effective from the moment of application
- If you wear make up – chemical sunscreens tend to blend in easier as theyre lighter, but physical sunscreens may also blend in well if you mix it with your moisturiser instead of applying it on top of moisturiser
- If you have irritated/sensitive/acne prone skin – physical sunscreen cause less irritation and are usually non comedogenic, which makes it more suitable to acne prone skin

What is a chemical sunscreen?
Chemical sunscreens absorb UV radiation into the skin, which is converted into heat and then released from the skin. They are smaller molecules, which means it is easier to rub in and doesn’t leave a white cast. However, it can lead to more sensitivity and less suitable for people with allergies/irritable skin.
Ingredients to look out for: Oxybenzone (the most common), Octinoxate, Octisalate and Avobenzone
What is a physical sunscreen?
Physical sunscreens sit on top of the skin and reflect the UV rays away from the skin. These are larger molecules, which means its able to scatter and reflect UV more than chemical sunscreen, making it suitable for sensitive skin. However, it can leave a light cast on the skin, may be slightly harder to rub in and thicker in texture.
Ingredients to look out for: Titanium dioxide/Zinc oxide
Blog written by Charlee

