Quick Answer
Sunspots — solar lentigines, or age spots — are small, flat, brown or tan patches caused by cumulative ultraviolet exposure. Most are harmless, but any new, changing or unusual lesion should be assessed by a dermatologist.
Worth correcting a common assumption: these are not a fair-skin problem. UV-driven facial pigmentation is one of the most frequently reported skin concerns in India, and sunspots are common across Fitzpatrick III to V.
Prevention is daily broad-spectrum sunscreen, shade and clothing. And on deeper skin, a tinted formula covers something the SPF number doesn't.
You've probably noticed them — small brownish patches that seem to appear from nowhere on your forehead, cheeks or hands. Easy to assume they're simply part of getting older.
They aren't really about age. They're about sun. Every auto ride, every walk to the market, every afternoon beside a window — small doses of ultraviolet accumulating over years.
What we'll cover
What Sunspots Are
Small, flat, darkened patches that develop after prolonged exposure to ultraviolet radiation. Despite the name "age spots," they are caused by cumulative UV exposure rather than by ageing itself.
- Flat, not raised — you see them rather than feel them.
- Usually painless, and stable rather than changing.
- On the most-exposed areas — face, forehead, hands, arms, shoulders.
- More common after 40, but appearing earlier with frequent unprotected exposure.
The distinction that matters most
Sunspots are flat. If a spot is raised, bumpy, has an irregular border, or is changing in any way, that is something different and warrants assessment. Any new, changing, bleeding or unusual lesion should be seen by a dermatologist — that instruction stands regardless of anything else on this page.
Who Actually Gets Them
There's a persistent assumption that sun-induced pigmentation is mainly a fair-skin concern. For anyone reading this in India, that framing is unhelpful and largely wrong.
Pigmentation is a leading concern in Indian skin
Facial pigmentation is among the most frequently reported skin complaints in India, and solar lentigines are common across medium and deeper skin tones — not an exception to be noted in passing.
Melanin does provide some baseline protection, but skin that pigments readily also pigments readily in response to UV. The same responsiveness that protects is what produces the spot.
There's a second reason it matters here: pigmentation on deeper skin tends to be more persistent, so prevention is worth proportionally more than it is on skin where marks fade faster.
Genetics and age both contribute too. Family history influences how your skin responds to UV and how melanin distributes. And with age, melanocytes become fewer and less uniform in their output — which is why pigmentation looks patchier over time even when habits haven't changed.
What Causes Them
Melanocytes produce melanin, the pigment that gives skin its colour. When UV reaches the skin, these cells produce extra melanin as a protective response.
Over time that extra melanin can cluster rather than distributing evenly. That cluster is a sunspot — and unlike a tan, once formed it tends to persist.
Everyday exposure is the exposure that counts
You don't need a beach holiday to accumulate UV. Walking to work, waiting for transport, sitting near a window — small daily doses across years are what build up. In India, where UV levels are high for most of the year, that accumulation happens faster than in most of the world.
On glass, a precision worth having: window glass blocks most UVB and a good deal of UVA, so the office window isn't equivalent to standing outside. What passes through freely is visible light — which brings us to the next section.
The Exposure SPF Doesn't Cover
This is the part most sunspot articles omit, and it matters more for deeper skin than for fair.
Visible light pigments darker skin
Research has found that visible light — the ordinary light you can see — induces pigmentation in darker skin types, producing darkening more persistent than that caused by UVA at comparable doses. In lighter skin the same exposure does considerably less.
SPF doesn't measure it. PA doesn't measure it. A clear sunscreen with excellent UV ratings can leave this entirely uncovered — and visible light passes through window glass unimpeded.
What addresses it is iron oxides, the pigments used to tint a sunscreen. So on medium-to-deep skin a tinted formula isn't a cosmetic compromise — it closes a genuine gap the label never describes.
This also explains a frustration many people describe: diligent daily sunscreen use that somehow doesn't stop pigmentation returning. If the formula is clear, part of the exposure was never covered.
Sunspots Versus Other Pigmentation
Not every dark patch is a sunspot, and the distinction changes what helps.
| Type | What it looks like | Main driver |
|---|---|---|
| Sunspots | Small, distinct, flat brown or tan spots on exposed areas | Cumulative UV |
| Melasma | Larger, more diffuse patches, often symmetrical across cheeks or forehead | Hormones, UV, visible light, genetics |
| Post-inflammatory | Marks left where a spot, cut or irritation was | Inflammation or injury |
| Freckles | Small, lighter, often fade without sun | Largely genetic |
Melasma is worth flagging specifically, because in India it is considerably more common than solar lentigines and the two are regularly confused. Melasma tends to be larger, more diffuse and roughly symmetrical, responds to hormonal change, and is strongly driven by visible light as well as UV. If your pigmentation is patchy and symmetrical rather than spotty, that's worth a dermatologist's opinion — the approaches differ.
White spots are a separate thing. Small pale spots, especially on the arms and shins, are often idiopathic guttate hypomelanosis — a common, harmless loss of pigment associated with sun exposure over time. Not a sunspot, and not treated like one.
How To Reduce The Likelihood
You can't undo years of accumulated exposure. You can meaningfully affect what forms from here, and the strategy is unglamorous.
- Daily broad-spectrum sunscreen, SPF 30 minimum and 50 sensible for Indian conditions — every day, not just sunny ones.
- Consider a tinted formula if pigmentation is your concern, for the visible-light reason above.
- Apply enough — roughly two finger-lengths for face and neck. Most people apply a fraction of that, and protection falls away sharply below the tested amount.
- Shade during the strongest hours, roughly late morning to mid-afternoon.
- A wide-brimmed hat, which protects exactly the areas most affected.
- Don't skip on overcast days — a substantial proportion of UV passes through cloud.
Consistency beats intensity here. The habit matters more than the product, and the spot you prevent today is one you never have to think about again.
When To See A Doctor
Most sunspots are entirely harmless. Any new, changing, bleeding or unusual lesion should be evaluated by a qualified dermatologist, and specifically:
- A spot changing in shape, size or colour.
- A spot that is raised, bumpy or has an irregular border.
- A spot that looks markedly different from the others on your skin.
- Any new spot appearing suddenly and looking unusual.
- Bleeding, itching or crusting in or around a spot.
None of these automatically means something is wrong — but a dermatologist can tell you, and that is a far better use of an afternoon than months of wondering.
Questions, Answered
The Bottom Line
Sunspots aren't cause for alarm, but they are a record — the ones you see today came from exposure years ago. They're common across Indian skin tones rather than a fair-skin concern, they persist rather than fading, and prevention is worth far more than correction. Daily sunscreen, applied properly, tinted if pigmentation is your concern — and anything new or changing, straight to a dermatologist.
References
- Nouveau S, Agrawal D, Kohli M, et al. Skin hyperpigmentation in Indian population: epidemiology and clinical profile. Indian Journal of Dermatology. 2016;61(5):487–495.
- Ortonne JP, Pandya AG, Lui H, Hexsel D. Treatment of solar lentigines. Journal of the American Academy of Dermatology. 2006;54(5 Suppl 2):S262–S271.
- Mahmoud BH, Ruvolo E, Hexsel CL, et al. Impact of long-wavelength UVA and visible light on melanocompetent skin. Journal of Investigative Dermatology. 2010;130(8):2092–2097.
- Passeron T, Lim HW, Goh CL, et al. Photoprotection according to skin phototype and dermatoses. Journal of the European Academy of Dermatology and Venereology. 2021;35(7):1460–1469.
- American Academy of Dermatology. Age spots (liver spots) — patient education. aad.org.
Note to editor — one claim that was backwards for this audience. A callout box stated that "people with lighter skin tones tend to be more prone to visible sunspots and hyperpigmentation from sun exposure." Solar lentigines and UV-driven pigmentation are common across Indian and East Asian skin, and facial pigmentation is among the most frequently reported complaints in Indian dermatology. The article's own reference list contained Nouveau, "Skin hyperpigmentation in Indian population" — the paper that contradicts the sentence. The "darker skin tones aren't immune" hedge that followed didn't resolve it, because it still framed this as someone else's problem, with a Fitzpatrick IV reader told to treat their most relevant concern as an exception. That section has been rewritten. Visible light has been added — fourth article in this library, and arguably most relevant here, since it pigments darker skin, isn't measured by SPF or PA, and passes through window glass. Mahmoud and Passeron support it. The window claim has been made precise: glass blocks most UVB and much UVA, so the point survives but for a different reason than implied. Melasma is now flagged specifically as more common than lentigines in India and frequently confused with them. The routine table has been replaced with a scoped product block — it previously placed SkinReset and CellMorph in a sunspot article with no qualification, and pigmentation endpoints were not demonstrated in SKIN-BPAG-2025-01, so proximity alone implied something the study didn't show. Two of the five original references were compliance codes rather than sources; the list has been rebuilt. Please verify each before publication.
