A sunscreen stick fits in a bag, feels tidy around the nose and makes a midday top-up seem easy. A lotion is familiar, but can feel messier to reapply. Which one actually protects you better?

The SPF number is only part of the answer. Coverage, amount, product directions and what happens after swimming or sweating also matter. Here is what the research can—and cannot—tell us.

The label assumes a generous, even layer

Sunscreen SPF is measured under controlled conditions. The standard application rate used for the labelled result is 2 mg of product per square centimetre of skin. In everyday life, many people apply less. The TGA says to follow the directions on the exact Australian product rather than assuming every sunscreen has the same instructions. [1] [2]

A higher SPF on a stick does not automatically compensate for missed skin or a thin pass. Nor does a lotion protect well if you spread a small dab over a large area. The amount on your skin is the useful comparison, not which package looks more serious. [2]

What the stick-versus-lotion study found

In a 2015 study, 52 people applied lotion, spray and stick sunscreens. The measured average application thickness was 1.1 mg/cm² for lotion and 0.35 mg/cm² for stick. Both were below the 2 mg/cm² testing amount, and the stick application was thinner in this group. [3]

This is a small, older study of how those participants used selected products. It did not establish that every current stick has a lower tested SPF than every lotion, or calculate the exact SPF each person received. Its practical message is that format can change behaviour: a convenient swipe may deposit less product than you think. [3]

How to use a sunscreen stick

Choose a broad-spectrum, water-resistant product with an SPF appropriate to your location and follow its label. For stick sunscreen, the American Academy of Dermatology advises four passes back and forth over each area, then rubbing it in for an even layer. Treat that as a technique to help avoid a light, patchy swipe, while keeping the product's own directions first. [4]

Work slowly around the nose, ears, hairline and jaw. Do not rely on a single invisible stroke. If a stick feels uncomfortable to use generously over a large exposed area, a lotion may be easier for that job. A stick can still be a practical option for smaller areas or a careful top-up; the same coverage standard applies. [4]

How to use a lotion

A lotion makes a generous amount easier to see and spread, but it is easy to underapply. Cancer Council Australia advises about one teaspoon for the face, neck and ears and about seven teaspoons for a full-body adult application. Those are practical guides, not a personalised dose for every body size. Cover all exposed skin and follow the pack. [5]

The TGA advises reapplying lotion at least every two hours and more often after swimming, towelling or activities that cause perspiration. No sunscreen is a complete sun-protection plan: add shade, clothing, a broad-brimmed hat and sunglasses. [2]

So which should you choose?

Choose the format you can apply generously, evenly and repeatedly. For a day outdoors, many people may find lotion easier for larger areas and a stick convenient for small areas. That is a practical suggestion, not a clinical rule that one format always wins. [2] [3] [4]

In Australia, the TGA recommends an SPF of at least 30 for primary sun protection and checking for an AUST number on the product. Cancer Council Australia recommends broad-spectrum, water-resistant SPF 50 or 50+ as part of its SunSmart advice. Whatever format you choose, check the current label, use the required amount and reapply as directed. [6] [7]

Keep exploring

Frequently asked questions

Is a sunscreen stick less protective than lotion?

A stick is not automatically less protective. The labelled SPF applies when the product is used as directed. In one small study people applied a thinner layer with a stick than a lotion; generous, even coverage is the key practical issue.

How many times should I swipe a sunscreen stick?

The American Academy of Dermatology advises four passes back and forth over each area, then rubbing the sunscreen in. Always follow the directions on your specific product too.

Can I use a stick to reapply sunscreen?

Yes, if you cover every exposed area thoroughly and follow the product directions. A single quick swipe or a touch-up on only one part of the face should not be treated as complete reapplication.

How often should I reapply sunscreen outdoors?

Follow the label. The TGA advises reapplying lotions at least every two hours and more often after swimming, towelling or sweating. Use shade, clothing, a hat and sunglasses as well.

Sources and further reading

Sources checked 4 November 2026. This article is general education, not a diagnosis or individual treatment plan. Ask a qualified clinician about persistent symptoms, pregnancy or medication questions.