What should you look for on the bottle?
| Label detail | What to choose | What it means |
|---|---|---|
| Active ingredients | Zinc oxide, titanium dioxide or both | These are mineral sunscreen filters and are less likely to irritate infants' and toddlers' sensitive skin. |
| SPF | 30 or higher | SPF describes protection against sunburn, primarily from UVB rays. |
| Broad spectrum | Look for these words | The sunscreen protects against both UVA and UVB rays. |
| Water resistance | Check whether the label says 40 or 80 minutes | This is the tested period of protection during swimming or sweating, not permission to skip reapplication. |
A baby label is not essential: check the active ingredients and protection claims instead. The word "baby" has no FDA definition on sunscreen. Products marketed for babies and young children are less likely to contain additives that irritate skin, but the name alone does not tell you the formula.13
Why choose mineral sunscreen?
Mineral sunscreen protects skin mainly by absorbing ultraviolet radiation, not just by reflecting sunlight. Zinc oxide and titanium dioxide are stable in sunlight. The practical reason to choose them for toddlers is their lower likelihood of irritating sensitive skin, rather than a claim that every other sunscreen is unsafe. Chemical, mineral and hybrid sunscreens can all protect skin when they meet the protection requirements and are used correctly. A hybrid combines mineral filters with chemical filters; check the active ingredients if you want a mineral only formula.14
Formulas using very small mineral particles reduce that residue and improve ease of application. Concerns have been raised about these particles, but adverse effects have not been demonstrated, and the established benefits of sun protection outweigh the theoretical risks. A visible white finish is not the measure of protection: the tested SPF, UVA coverage and adequate application matter.4
How do you apply sunscreen to a toddler?
- 1Read the product directions. For children older than six months, follow the sunscreen's label, including directions specific to its format.
- 2Apply sunscreen 15 minutes before going outdoors. Mineral sunscreen is not a reason to ignore the application directions.
- 3Cover all exposed skin evenly and generously, avoiding the eyes and mouth. Include the ears, nose, back of the neck, hands, tops of the feet and hairline.
- 4Reapply at least every two hours outdoors. Reapply immediately after swimming or sweating, and after toweling off.
- 5Check the water resistance limit during water play. A 40 or 80 minute rating is a maximum tested interval in water or while sweating, not an extension of the two hour schedule.
Use enough sunscreen to cover exposed skin properly, rather than spreading a small amount as far as it will go. SPF testing uses a defined application thickness; applying too little can mean less protection than the stated SPF. Sunscreens come as creams, lotions, sticks and sprays, among other formats, and their directions differ, which gives a sunscreen shopping list an unexpected resemblance to an art supplies order. Never spray sunscreen directly onto the face.24
Does SPF 50 last longer than SPF 30?
A higher SPF offers greater protection against sunburn, not a longer reapplication interval. SPF 30 filters about 97% of UVB rays, while SPF 50 filters about 98%. Neither blocks every ultraviolet ray. Use sunscreen daily when the forecast UV index reaches 3 or higher, and maintain the same reapplication schedule outdoors regardless of SPF. Sunscreen is protection for an outing, not a treatment that needs weeks to build an effect.24
What else does a toddler need in the sun?
Keep young children out of direct sun as much as possible, particularly around midday. Choose lightweight, loose clothing that covers skin, sunglasses and a hat with a wide brim or a long flap protecting the ears and neck. An umbrella, canopy or stroller sunshade can provide shade when none is available. Do not cover a pushchair with a blanket: it can cause overheating. Check regularly that your child is not getting too hot, and offer plenty of fluids in hot weather.35
When should you get advice?
If a young child becomes unusually fussy, cries excessively or develops redness on exposed skin during an outing, take them indoors immediately. Young children can become ill from dehydration, overheating and sunburn. Ask a dermatologist about skin reactions or uncertainty about suitable sun protection. For a younger sibling under six months, prioritize shade and clothing and ask a doctor before applying sunscreen; the routine for a toddler is not the routine for a newborn.235
Can you use last summer's bottle?
Check the expiry date and discard expired sunscreen. If there is no expiry date, treat the sunscreen as expired three years after purchase; discard it if you do not know its age. Keep the container out of excessive heat and direct sunlight. While outdoors, store it in the shade or wrap it in a towel rather than leaving it exposed to the sun.2
