Mineral vs Chemical SPF
The difference between mineral and chemical SPF and which one should we choose?
While it's always a pleasure to open the curtains each morning and be greeted by a sunny day, it's extremely important to take steps to protect our skin from harmful UV rays. In fact, incorporating a sunscreen into your morning skincare routine year round is key to shielding your skin from sunburn and the signs of premature ageing, including fine lines, wrinkles and hyperpigmentation.
Sunscreen can broadly be separated into two categories: chemical SPF and mineral SPF. Let's explore the differences between them to ensure that you're choosing the best sunscreen for both your lifestyle and your skin.
What is mineral SPF?
Mineral sunscreen is formulated with ingredients that form a physical barrier on the surface of the skin, which work to scatter and block harmful sun rays. This type of SPF is also referred to as physical or organic sunscreen and is typically formulated with titanium dioxide and/or zinc oxide.
What are the advantages of mineral SPF?
There are numerous advantages to mineral sunscreen, including:
- Suitable for sensitive skin
Mineral sunscreens are typically very well-tolerated by all skin types, including people with sensitive or allergy-prone skin. They are less likely to cause skin irritation and are often recommended for children.
- Suitable for acne-prone skin
Mineral SPF is also less likely to contribute to breakouts or clog pores, which is why many people with acne-prone skin choose this type of sunscreen over chemical alternatives.
- Offers immediate sun protection
As mineral sunscreens sit on the surface of the skin, they offer immediate protection from the sun, which can be preferable for those who lead very busy lifestyles.
What are the disadvantages of mineral sunscreen?
There are also some drawbacks to mineral SPF to consider, including:
- Thicker texture
The formulation of mineral sunscreens tend to be thicker, which means that they can feel heavier on the skin and take a bit longer to apply.
- Can leave a white residue
The particles of titanium dioxide and/or zinc oxide in the formulation can be visible and leave a noticeable white cast on the skin. This can be particularly noticeable on darker skin, so mineral SPF isn't always ideal.
What is chemical SPF?
Chemical sunscreen is formulated with ingredients that absorb UV rays before they are able to cause any damage to the skin. There are many compounds that can be found in chemical sunscreens, including octinoxate, oxybenzone, and avobenzone. These active ingredients convert UV rays into heat, which is then released from the skin.
What are the advantages of chemical SPF?
Some of the pros of chemical SPF include:
- Easy to apply
The lightweight formulations of many chemical sunscreens make them incredibly quick and easy to apply.
- Not noticeable on the skin
There's no need to worry about a white cast, as chemical sunscreens are typically transparent.
- Water-resistant
Chemical sunscreens are often significantly more resistant to water than mineral sunscreens, which means they may be more effective for longer when exposed to sweat or water.
What are the disadvantages of chemical SPF?
There are also some disadvantages to consider, including:
- May cause irritation
Chemical sunscreens are more likely to cause skin irritation, so it's always advisable to do a small patch test when trying a new formulation.
- Isn't effective instantly
Chemical sunscreen needs some time to absorb into the skin and become fully effective, so it's vital to apply it at least 20 minutes before sun exposure.
Is chemical or mineral SPF better?
Personal preference plays a huge role when it comes to choosing an SPF. If you're looking for personalised advice, book a skin consultation with one of our skin experts who can help you curate a skincare routine that works for you.