The Short Answer
An SPF number comes from a lab test at 2 milligrams per square centimeter of skin — roughly a third of a teaspoon for a face. Whether you get the protection on the label depends almost entirely on whether you apply that much. Lotions make it possible to measure. Sticks make it almost impossible to know, which is the one real argument against them.
| Situation | Better format | Why |
|---|---|---|
| Morning base layer | Lotion | Easiest to apply at the tested dose |
| Reapplying over makeup | Stick | No rubbing, no disturbing the base |
| A day outdoors, sweating | Lotion, then stick top-ups | Lotion covers; stick refreshes |
| Kids at the beach | Stick for faces, lotion for bodies | Faster on a moving target |
| Ears, hairline, tops of feet | Stick | Reaches the spots people skip |
| Carry-on and travel | Stick | Not a liquid, cannot leak |
| Very dry skin | Lotion | Sticks are waxy and can feel tight |
How They Actually Differ
| Stick | Lotion | |
|---|---|---|
| Ease of hitting the tested dose | Hard to judge | Straightforward |
| Reapplying over makeup | Excellent | Poor |
| Greasy hands | None | Yes |
| Travel | Not a liquid | Counts against liquid limits |
| Coverage speed on a body | Slow | Fast |
| Typical finish | Waxy or dry-oil | Ranges from matte to rich |
| Cost per use | Higher | Lower |
How much is enough from a stick? Manufacturers generally advise passing it back and forth over each area several times until skin is visibly, evenly covered — not a single swipe. Four passes over each area is the common instruction, and almost nobody does it. If you use a stick as your only morning sunscreen, assume you are getting less protection than the label promises.
Who Each One Suits
- Lotion suits everyone as the morning base, and it is the only format where hitting the tested dose is easy.
- Sticks suit reapplication, commuting, desks, gym bags, golf, kids' faces and anyone who will not otherwise top up.
- Oily skin often prefers a stick top-up to a second layer of lotion at midday.
- Dry skin may find sticks tight; a rich lotion is more comfortable under makeup.
- Anyone with a beard or long hair will find a stick easier around the hairline and jaw.
The honest framing is that the best sunscreen is the one that ends up on your skin in sufficient quantity, repeatedly. A stick you reapply beats a superior lotion sitting in a drawer, and a lotion applied properly beats a stick swiped once. Both statements are true and neither wins the argument outright — see best face sunscreen daily for choosing the base layer.
Applying Both Properly
- Morning: a third of a teaspoon of lotion for face and neck, as the last skincare step before makeup.
- Wait a few minutes before makeup so the film can set.
- Reapply every two hours outdoors, and after swimming or heavy sweating regardless of what the label claims.
- Stick technique: four passes over each area, then blend lightly with a fingertip if there is a cast.
- Do not forget ears, the back of the neck, the part in your hair and the tops of your feet.
- Store the stick out of a hot car. Heat softens the wax base and ruins the application.
