Some skin lessons are best delivered as stories, because children remember stories long after they forget instructions. This one is for reading aloud on a summer morning, with the science for grown-ups following after. It begins, as the best summer stories do, at a grandmother's garden gate.
Mira was seven, and she did not want the hat. 'Hats are for babies,' she announced. Her grandmother, who had the most interesting face in the family — soft lines around the eyes like a map of every smile — sat down on the step beside her. 'Let me tell you about my friend the tomato,' she said, and Mira, who knew a good beginning when she heard one, sat down too.
The story of the two tomatoes
'When I was your age,' Grandmother said, 'I grew two tomato plants. One grew under the big net that shades young plants; one grew out in the open, because I wanted it to be strong and brave. The sun in our valley is friendly in the morning and fierce at midday. My open-air tomato ripened fast — and then its skin grew tough patches and cracks, and by August it was wrinkled like an old boot. The shaded one grew slower, and stayed smooth and glossy right until picking day.'
'Your skin is a little like the tomato's,' she said, tapping Mira's nose. 'It remembers every hour of fierce sun, even when you forget. Not the morning walks and the playing in the shade — skin loves being outdoors. The burning hours, the red-shoulder days. It writes them all down in a secret notebook, and it reads the notebook back to you when you are my age.' Mira looked at the map of lines around her grandmother's eyes. 'Did your skin write things down?' — 'Plenty,' laughed Grandmother. 'Sunhats hadn't been invented as far as I was concerned. I would like your notebook to be mostly empty, that's all. Wearing the hat isn't being a baby. It's being the gardener.'
The science under the story
For the grown-ups: the tomato is doing honest work. Childhood is when skin is thinnest and most vulnerable, and research consistently links sunburns in childhood to substantially higher lifetime skin-cancer risk — the 'notebook' is real, and it is cumulative. The protective playbook for children is well established: shade in the peak hours, cover-ups and wide-brim hats as the first line, and a broad-spectrum SPF 30+ on what remains exposed, reapplied after swimming and sweat.
Babies under six months are a special case — direct sun and sunscreen are both to be avoided; shade and clothing do the whole job. And the most powerful intervention of all is unglamorous: children copy adults. A parent who wears a hat and applies sunscreen without commentary teaches more in a summer than every lecture combined.
Making it stick
Habits outperform rules. Keep the sunscreen next to the breakfast things in summer so it joins the leaving-the-house ritual; let children choose their own hat, because ownership beats compliance; name the shade-hours in family language ('tomato hours') so the concept has a handle a child can grab. None of this needs fear — the sun is not the villain of the story, the burning hours are.
Mira, for the record, wore the hat — a yellow one she chose herself, with a brim like a sunflower. And on the way to the beach she explained tomatoes, at length, to her little brother. Lessons that arrive as stories leave as stories, which is exactly how they travel best.
Why childhood exposure matters disproportionately
A substantial proportion of a person's lifetime ultraviolet exposure occurs before adulthood, which is the single fact that makes childhood sun protection more valuable than protection at any later stage.
Children's skin is also structurally more vulnerable. The stratum corneum is thinner, melanin production in very young children is not yet fully developed, and the surface area relative to body mass is larger. Infants under six months have particularly limited defences, which is why shade and clothing rather than product are the recommended approach at that age.
The epidemiological point is the one that matters most. Severe sunburns in childhood are associated in multiple studies with increased melanoma risk in adulthood, and the association is stronger for childhood burns than for equivalent burns later. Protection at this stage is not a habit being rehearsed for later; it is the exposure that most affects the eventual outcome.
The story, and why stories work here
The two-tomatoes framing works because it makes an invisible process visible. Ultraviolet damage has no immediate sensation and appears hours after the exposure that caused it, which is precisely the structure that makes it hard for a child — or an adult — to connect cause and effect.
A story supplies a mechanism the child can picture, and pictured mechanisms are remembered where instructions are not. The specific claim being conveyed is simple: the sun keeps working on skin even when it does not feel hot, and the effect shows up later.
The reason to teach it this way rather than through a rule is that rules require enforcement and understanding does not. A child who knows why the hat matters applies the hat when nobody is watching, which is the only version that survives the transition to independence.
What actually protects a child
The ordering is different for children than for adults, and product comes last rather than first. Shade during the middle hours of the day removes more exposure than anything else and requires nothing to be applied or reapplied.
Clothing is second and considerably more reliable than sunscreen, because it does not need reapplying, cannot be applied too thinly, and does not get rubbed off. Tightly woven fabrics, long sleeves, and garments rated for ultraviolet protection all work. A wide-brimmed hat protects the face, ears and neck continuously.
Sunscreen covers what the first two cannot: hands, faces, and whatever is exposed during ordinary activity. Mineral formulations based on zinc oxide are frequently preferred for young skin on tolerability grounds rather than efficacy ones, and the practical requirement is the same as for adults — enough of it, and reapplied after swimming, towelling or two hours outdoors.
Making it happen without a daily argument
The obstacles are almost entirely practical. Sunscreen that stings the eyes, feels unpleasant, or takes a long time to apply will be resisted every time, and the resistance is reasonable. Trying several formulations to find one a particular child tolerates is a better use of effort than insisting on a product they hate.
Making it part of a sequence rather than an event helps: sunscreen goes on with getting dressed, hat goes on with shoes. A child who has to be caught and treated before every outing will resist; one for whom it is part of leaving the house does not experience it as an imposition.
Letting them do it themselves, badly, and then filling in the gaps is a reasonable trade. Application quality is a real issue and autonomy is what converts a rule into a habit. Adults applying it visibly and without comment does more than any amount of instruction, for the same reason it works with teenagers.
Sunburn in a child, and what to do
Despite reasonable precautions, burns happen, and knowing the response is worth having in advance. Get the child out of the sun, cool the skin with lukewarm water rather than ice, encourage fluids, and apply a bland moisturiser once the skin has cooled.
What warrants medical attention is more specific: blistering over a significant area, burns in an infant under one year, fever, vomiting, marked lethargy, or a child who seems unwell rather than simply uncomfortable. These can indicate more than a superficial burn and are not situations to manage at home.
The one thing not to do is treat the burn as a moral failure, either the child's or your own. Burns occur, the useful response is to adjust the arrangements — earlier shade, a hat that stays on, reapplication after swimming — and the shame framing achieves nothing except making the subject harder to discuss next time.
The vitamin D question
Parents frequently and reasonably ask whether protecting children from the sun risks vitamin D deficiency, and the honest answer is that this is a real consideration with a straightforward resolution.
The trial evidence on adults has generally found that realistic sunscreen use does not produce deficiency, since typical application is thin enough and incidental exposure sufficient. But vitamin D status genuinely varies by latitude, season, skin tone and diet, and children in some populations do have low levels.
The resolution is that supplementation is a considerably safer route to adequate vitamin D than deliberate unprotected exposure. Many countries recommend supplements for young children as a matter of course. Anyone concerned about their child's status should raise it with a clinician and address it that way, rather than reducing sun protection to solve a problem that has a better solution. As with everything on this site, this is educational rather than medical advice.
The conditions people underestimate
The situations that produce burns are frequently not the obvious ones, and knowing which they are is worth more than a general instruction to be careful.
Cloud cover is the most common misjudgement. A substantial proportion of ultraviolet penetrates cloud, and a cool overcast day removes the heat that would otherwise prompt caution while leaving much of the radiation. Water, sand and snow all reflect additional ultraviolet upward, which is why burns on the underside of the chin and the nose are characteristic of days at the beach or on snow.
Altitude increases intensity measurably, as does proximity to the equator, and both catch people on holiday who apply their usual habits to conditions that are not their usual ones. Wind and cold suppress the sensation of burning without reducing the exposure at all, which is the mechanism behind most burns acquired during winter sports.
Moles and what is worth watching
Children acquire moles through childhood and adolescence, and most are entirely ordinary. Knowing roughly what warrants attention prevents both unnecessary alarm and missed changes.
The features that prompt review are asymmetry, an irregular or poorly defined border, more than one colour within a single lesion, a diameter larger than most of the child's others, and — the most important — change over time. Any lesion that is itching, bleeding, crusting or noticeably different from the rest deserves a look.
The practical version for parents is a couple of minutes twice a year, ideally with a photograph so that change is assessable rather than remembered. This is not a reason for vigilance about every freckle, and it is a reasonable habit in a family where sun exposure is high or where there is a family history. Anything uncertain is worth showing to a clinician, who would far rather see ten ordinary moles than miss one. As with everything on this site, this is educational rather than medical advice.