How to Choose a Sunscreen

Sunscreen is the single most valuable step in a skincare routine — the one product with the deepest evidence behind it for keeping skin healthy and slowing visible aging. And yet it is the step people most often skip, almost always for the same reason: they chose a sunscreen that felt greasy, stung their eyes, or left them looking chalky, so they quietly stopped using it. That is the whole game. The best sunscreen is not the one with the highest number or the longest ingredient list — it is the one you will genuinely put on every single morning. Choosing well means clearing two non-negotiables on the label, then finding a texture and finish you will actually wear. Here is how to do both.

The two things the label must say

Ignore most of the front of the bottle and look for two things. First, SPF 30 or higher — this is the widely recommended daily minimum, and while SPF measures protection against UVB, the rays behind sunburn, more is only marginally more once you pass 30. Second, broad spectrum, which means the sunscreen also protects against UVA, the rays more associated with aging and long-term damage. A high SPF that is not broad spectrum is leaving half the job undone. Regulatory and dermatology guidance both center on this pair: FDA consumer guidance frames SPF 30-plus and broad spectrum as the baseline, and the AAD's label guide echoes it. If a product also says water resistant, that tells you how long it holds up while you sweat or swim — useful, but secondary to the first two. Get those two right and you have a sunscreen worth considering.

Mineral vs chemical filters

Sunscreens protect in one of two ways, and the difference is more about feel than effectiveness. Mineral sunscreens use zinc oxide or titanium dioxide, which sit on the surface and are gentle enough that sensitive, reactive and rosacea-prone skin often reaches for them first. Their downside is a potential white cast. Chemical sunscreens use filters that absorb into the top layer of skin; they tend to feel lighter and disappear more easily, but some formulas can sting the eyes or bother sensitive skin. Both protect well when they are broad spectrum and applied properly, so this is a preference, not a hierarchy. Our full comparison of mineral vs chemical sunscreen goes deeper if you are torn, and the mineral option zinc oxide is worth understanding on its own.

Finish and feel: the part that decides everything

Once a sunscreen clears the label test, the deciding factor is how it feels and looks on you, because that is what determines whether you keep using it. Think about a few things honestly. Does it leave a white or ashy cast on your skin tone, or does it blend in — tinted mineral formulas with iron oxides are the usual fix for deeper tones. Is the finish matte or dewy, and does that suit oily or dry skin? Does it sit well under makeup, or pill and roll off? Does it feel heavy, or light enough to forget you are wearing it? None of these change the protection on paper, but every one of them affects whether the bottle actually gets used. A sunscreen you dislike is a sunscreen you will skip, and a skipped SPF protects nothing.

Matching sunscreen to your skin

A few pairings make the search shorter. Oily and acne-prone skin usually prefers a matte, lightweight or gel sunscreen labeled non-comedogenic. Dry skin does better with a hydrating or cream formula that will not add to tightness. Sensitive and reactive skin often lands on a fragrance-free mineral sunscreen, since zinc and titanium are less likely to sting. Deeper skin tones are usually best served by a tinted or well-formulated chemical sunscreen that avoids a cast. And for the face specifically, a dedicated facial sunscreen tends to feel far more wearable than a thick body formula — our best sunscreen for face picks are chosen with daily wear in mind.

How much, and how often

Even the perfect sunscreen underperforms if you use too little, and most people do. The protection on the label assumes a generous layer — roughly a nickel-sized amount for the face alone, or the two-finger guideline many find easier to picture. Skimp on the amount and you get a fraction of the SPF printed on the bottle. Reapply about every two hours when you are out in the sun, and sooner after swimming or sweating. Our guide on how much sunscreen to apply makes the amount concrete. Application is genuinely the difference between an SPF 30 and its real-world number, which is another reason a comfortable sunscreen you apply properly beats a high-SPF one you rush.

The bottom line

Choosing a sunscreen comes down to two label checks and one honest question. Confirm it is SPF 30 or higher and broad spectrum — that clears the protection bar. Then choose the format you will genuinely wear every day: mineral or chemical, tinted or clear, matte or dewy, whatever feels good enough on your skin that reaching for it becomes automatic. Apply enough of it, reapply when you are out in the sun, and do not lean on a moisturizer's built-in SPF as your only protection. The highest number on the shelf is worthless in the drawer, while a modest SPF you actually use is doing real work every day. For medical-grade concerns or a history of skin cancer, a dermatologist can tailor the advice further.