Most people choose a sunscreen the same way: they pick up a bottle, check that it says SPF somewhere on the label, and consider the job done.
The problem is that SPF alone tells you less than half of what you need to know. And the wrong sunscreen does not just underperform — it gives you false confidence while your skin continues to absorb UV damage you will not see for months or years.
Here is what actually matters when choosing a sunscreen — and how your specific skin type changes the answer.
The Three Things That Actually Matter
Before skin type even enters the conversation, there are three non-negotiable criteria that every sunscreen needs to meet.
Broad-Spectrum Protection
The SPF number on a label tells you about UVB protection — the rays that cause sunburn. It tells you nothing about UVA protection — the rays that penetrate deeper, break down collagen, trigger pigmentation, and drive premature aging without ever causing a burn.
A sunscreen must be labelled broad-spectrum to confirm that it protects against both UVA and UVB. If it is not broad-spectrum, you are only partially protected. You may not burn. But your skin is absorbing the deeper, less visible, more damaging UV exposure every day.
SPF 30 or Higher
SPF 30 is Health Canada's standard for daily use — for all skin types, year-round, including cloudy days and winter months. This is not a summer recommendation. It is a daily minimum, applied every day, twelve months a year.
SPF 30 blocks approximately 97 percent of UVB rays. SPF 50 blocks approximately 98 percent. The difference between SPF 30 and SPF 100 is smaller than most people assume — which is why the more important factors are broad-spectrum coverage, proper application, and consistent reapplication.
Water Resistance
If you sweat, swim, or spend any extended time outdoors, your sunscreen needs to be water-resistant. Sunscreen that is not water-resistant degrades with moisture — and in a Canadian spring and summer with active lifestyles, that degradation happens faster than you think.
How Skin Type Changes What Works
Beyond the three fundamentals, skin type determines which formula actually stays on your face, does not cause breakouts, does not leave a white cast, and feels comfortable enough to wear every single day.
Oily or Acne-Prone Skin
Heavy, creamy sunscreens can clog pores and worsen breakouts for oily or acne-prone skin. Look for lightweight, fluid, gel, or non-comedogenic formulas that sit comfortably without adding congestion. Matte-finish sunscreens help manage shine without stripping. Avoid heavy emollients and petroleum-based formulas.
Dry Skin
Dry skin benefits from sunscreens that include hydrating ingredients — hyaluronic acid, glycerin, ceramides — that support the skin barrier while providing UV protection. A cream or lotion formula with some emollience is typically more comfortable than a lightweight gel, which can feel tight on dry skin.
Sensitive or Reactive Skin
Mineral sunscreens (containing zinc oxide or titanium dioxide) are generally better tolerated by sensitive skin than chemical sunscreens. Chemical filters are absorbed into the skin and converted to heat — for reactive or easily sensitized skin, this can cause irritation. Mineral filters sit on the surface of the skin, physically deflecting UV, and are considered less likely to trigger sensitivity reactions.
Fragrance-free and alcohol-free formulas further reduce the risk of irritation for sensitive skin types.
Darker Skin Tones
White cast is a real and valid concern for deeper skin tones, and it is one of the main reasons people abandon their sunscreen routine. Many mineral sunscreens leave an ashy, white appearance that is cosmetically unacceptable for deeper complexions.
Tinted mineral sunscreens, sheer mineral formulas, or broad-spectrum chemical sunscreens with no white cast are more appropriate. Chemical filters, while less ideal for sensitive skin, typically apply invisibly across all skin tones.
The Formula You Do Not Use Is Not Protecting You
This is the practical truth behind all of the above: the best sunscreen is the one you actually apply every day, consistently.
If your sunscreen feels heavy on your oily skin, you stop wearing it by April. If it leaves a white cast on your skin, you wear it once and never reach for it again. If it causes breakouts, it goes in a drawer.
The formula that works for your skin type is the one that stays in your routine. Everything else is wishful protection.