The One Product Dermatologists Wish Everyone Would Start Using

I've always been into my skincare. (Ask any girl with hormonal acne and I'm sure she'll tell you the same). The desire to find that one wonder product started in my teenage years, where I'd spend hours lusting over the just-launched cleansers and shiny posts of moisturisers in the monthly glossies, while most weekends involved poring over the shelves in Boots deciding how to spend the £30 I'd earned from my Saturday job. (Which, for the record, actually happened to be in Boots.)

Since then, I've been lucky enough to try some of the best skincare products on the market and have created a routine that works for my skin and its needs. But I'm ashamed to say that my routine was distinctly lacking in one skincare product until about a year ago: SPF.

Through creating content with celebrity facialists and chatting to dermatologists about the best ways to care for your complexion, I discovered that skin experts unanimously agreed that SPF was an integral part of any successful skincare routine. Yet so many of us—myself included—choose to ignore it.

Personally, I think there are two main reasons for our hesitance around using a daily SPF: Firstly, the UK isn't exactly renowned for its amazing weather (especially during the winter months when you might not have seen the sun for weeks). It isn't normally until a heat wave rears its head on the weather forecast that we feel any kind of desire to start slapping on the sun protection on a daily basis. Secondly—between UVA and UVB protection, broad spectrums and star ratings—knowing what to look for when choosing an SPF can feel like a bit of a minefield.

So to help debunk the myths around SPF and get to the root of exactly why it is so important, I caught up with some skincare experts for the full lowdown. Keep scrolling for a foolproof guide to choosing the best sun protection for you and to shop the best SPF products out there.

SPF, UVA and UVB: What does it all mean?

Let's start with the basics, shall we? SPF stands for Sun Protection Factor and, in the UK, is a measure of the amount of ultraviolet B radiation protection. Simply put, the higher the factor number, the higher the UVB protection.

UVA, on the other hand, stands for ultraviolet A radiation and can be measured by the star rating on UK sunscreens. The higher the star rating, the better the protection—with a five-star rating being the best.

If a sunscreen refers to itself as "broad spectrum" then this means that it offers both UVA and UVB protection. However, in the UK, if sunscreen has both an SPF rating and a star rating, then it will also protect you against both types of rays.

The difference between the rays

Understanding the difference between UVA and UVB rays feels a little like heading back to school for a science class. "They are different wavelengths of light," explained David Colbert, New York Dermatology Group founder and head physician. "The UVB waves burn and age the skin, the UVA waves penetrate deeper and tan the skin, and both waves damage collagen and age the skin."

UVA rays make up about 95% of the UV light that reaches us and are considered the largest threat to our skin. They're present whenever it's daylight—regardless of whether the sun is out or not—and can penetrate through glass. UVB rays, meanwhile, have a much smaller range but are responsible for the visible changes that you see to the surface of your skin—like burning.

While both UVA and UVB rays have been proven to play a role in skin cancer, UVA rays penetrate your skin much more deeply than UVB rays—eroding firmness, elasticity and causing wrinkles.

How much and how often?

There's plenty of conflicting advice about how much SPF to apply, but it's widely accepted that most of us just don't slather on enough of it. Official National Health Service guidelines advise using two teaspoons of sunscreen for your head, arms and neck, or two tablespoons for your entire body. But in case you don't want to treat your sun protection like you're baking a cake, Colbert says you can use SPF "just like a moisturiser—enough to lightly cover the skin."

When it comes to applying SPF, you should do so about 30 minutes before you head outside. I apply it as the last step in my skincare routine before doing my hair and makeup. However, if it's a summer's day, you're advised to reapply it just before you leave the house and every couple of hours that you're outside. If you really want to save time, then opt for beauty products that have SPF built in. There are plenty of moisturisers, foundations, lip balms and hair sprays that are formulated with sun protection so you don't have to worry about applying it separately.

Now, for the most important question—do we need to wear SPF every day in the UK? "I'd say if it's a rainy day, you could skip it," Colbert cautiously advised. "However, we're exposed to UV rays even on a cloudy day." If you're cautious about ageing, Colbert advises wearing an SFP 30 daily. "If you introduce SPF as part of your daily routine, you'll escape the ageing rays of the sun and your skin will age at a slower rate."

Keep scrolling to shop my pick of the best SPF products.

It was this product that changed the SPF game for me. Specially formulated for blemish-prone skin, it offers UVA and UVB protection in a lightweight moisturiser that doesn't clog pores. I apply it every morning and love the way that it doubles as a makeup primer.

Kelly Rowland and celebrity aesthetician Shani Darden (whose clients include Rosie Huntington-Whiteley, Chrissy Teigen and Jessica Alba) swear by this SPF. Particularly good for deeper skin tones, it provides broad-spectrum protection and deep hydration without leaving any white residue on the surface of your skin.

Skincare expert Susanne Kaufmann believes that there are multiple SPF recommendations based on your "photo type—meaning your hair colour, eye colour and lifestyle profile." However, this sun cream from her eponymous brand is a great all-rounder for protecting your skin and body.

Giving my beloved Paula's Choice a run for its money is this glow-boosting daily moisturiser from BareMinerals. I'm a huge fan of the serum in the same range for its ability to brighten my skin when it looks dullest. This offers the same level of radiance with the added bonus of sun protection.

Way more than just a moisturiser, this pigmented formula from Nars provides coverage, hydration and broad-spectrum sun protection in one handy tube. It's oil-free, so it won't cause congestion for spot-prone skin types but still brings plenty of glow to dehydrated complexions.

A clear water-gel formula with no residue or white cast, this lightweight daily sunscreen not only protects against UVA and UVB rays but also pollution and external aggressors.

An affordable sunscreen option that protects skin from UVA and UVB light alongside a healthy dose of complexion-boosting antioxidants.

SPF is usually a step that's incorporated into the skincare part of your daily routine, but Lumene has decided to mix it up with a makeup product containing sun protection. This skin-brightening primer delivers a subtle sheen to your skin that helps any products applied on top to look more luminous—all while protecting your skin with SPF 30.

I went through a phase of forgoing foundation entirely in favour of this tinted moisturiser. Described as a lightly tinted day cream, I feel like it provides pretty decent coverage and the kind of dewy finish that you'd normally only achieve after a facial. The fact that it also boasts an SPF of 20 is just an added bonus.

If you aren't a hat person, protecting your scalp and hair from the sun is no mean feat. Thankfully, this protective primer from Bumble and Bumble offers up protection against UV rays and heat styling. Just spray it onto damp or dry hair and you're good to go.

Hannah Almassi, WWW UK's editor in chief, picked up this oil-free SPF for her recent holiday but was so impressed with it that she's continued using it back home in the UK.

I was thrilled to learn that Rituals, one of my favourite bodycare brands, was expanding into sun protection. Not only does this spray provide easy application, but it also smells incredible and sinks effortlessly into your skin.

If like me, you've ever experienced sunburnt lips, then you'll be all too familiar with the importance of protecting your pout. This natural balm from Bali Body contains nourishing oils to care for dry lips while shielding them from damaging rays. I also swear by the brand's new Face Tan Water for achieving a safe golden glow without having to step one foot outside in the sun.

After recently running out of my beloved Paula's Choice, I decided to give this new launch a go. I'm a big fan of Drunk Elephant anyway and was really pleased with how well this SPF layered under makeup.

Free from chemical nasties, this non-toxic and biodegradable clean sunscreen is a great option for sensitive skin who are looking for sun protection that won't cause irritation.

An impressively high SPF for a foundation, this lightweight base product combines all the hydrating benefits of a serum with the coverage of a tinted moisturiser. Plus, your skin will be protected from the sun's rays at the same time.

This prep step not only smooths pores and evens skin tone, but it also protects your skin from the sun and the damaging effects of city living.

Oily complexions will delight in this mattifying formula from REN. It feels incredibly soothing when applied, keeps excess oil at bay and blocks UVA and UVB rays.