How does SPF work?
There are two different types of SPF, which work in different ways and have their own pros and cons. Mineral SPF, containing ingredients such as zinc oxide, sits on top of the skin, forming a barrier to reflect the sun’s rays. The other type is chemical, which contains ingredients such as homosalate that absorbs UVA and UVB rays. “Mineral formulas tend to be better suited to sensitive skins,” explains Heather at Paula’s Choice. “But chemical formulas provide a colourless finish on skin, making them great for all skin tones.”
Which SPF is best?
Life beyond the sun lounger has done SPF formulas a world of good – gone are the days of stickiness and artificial fragrance, replaced with an array of formula types that can fit into your routine. Dr. Barbara Sturm’s hero Sun Drops, for example, “can be added to face creams and serums or applied directly to your face, neck and décolleté,” explains Dr. Sturm. “They use chemical sunscreen filters to create a broad-spectrum shield against UVA and UVB rays that feels super lightweight on the skin.” Similarly versatile, Hello Sunday’s SPF mist sits on top of make-up so you can top up throughout the day, Thank You Farmer just launched a super-lightweight ‘water’ sun cream, and Coola is renowned for its cucumber-scented SPF.
Many brands now blend SPF with other skincare or make-up. “At Supergoop! We now have over 40 different formulas,” explains Holly Thaggard. “You can use SPF as a serum, moisturiser or to prime, colour correct and even set your make-up.” That means SPF could replace part of your current routine. “We have figured out ways to combine SPF with powerhouse skincare ingredients like high-potency vitamin C, hyaluronic acid, bio-retinol and niacinamide,” says Holly. Cue a sigh of relief from beauty-shelf minimalists.
If you like to regularly change up your make-up looks, you can do the same with your SPF to create what Holly calls her “SPF wardrobe”. She explains, “My SPF products are often layered or chosen based on what look I’m going for – glowy, natural or matte.”
The bottom line? “The most important thing to check is that your sunscreen is broad spectrum and rated a minimum SPF30,” says Heather from Paula’s Choice. “The second most important thing is to find a sunscreen that you want to wear. The best sunscreen is the sunscreen you want to and do apply.”