Which Type of Pigmentation Do You Have? Tan, PIH, Melasma, Freckles and Sun Spots
Most facial pigmentation falls into five patterns: tan, post-inflammatory hyperpigmentation, melasma, freckles and sun spots. You can usually tell them apart by three things β the shape of the patch, where it sits on the face, and what happened just before it appeared. Each responds to a different timeline.
Whichever type you have, the routine starts the same way.
Every form of pigmentation darkens with UV exposure, and none of them fade while new pigment is still forming. The Ultimate Brightening Combo pairs our 10% Niacinamide + 1% Zinc Brightening Serum with the 2% Niacinamide oxybenzone-free SPF 50 sunscreen β one treats, one protects, and they only work as a pair.
Explore the Ultimate Brightening Combo βWhy does identifying the type matter?
Because the realistic timeline and the correct approach differ enormously between them. A tan resolves in weeks with sun protection alone. Melasma is a chronic, relapsing condition that needs lifelong management. Treating one as though it were the other is the most common reason people conclude that "nothing works" on their pigmentation.
All five share one mechanism β melanocytes producing excess melanin β and one universal aggravator, ultraviolet light. What differs is the trigger, the depth of the pigment, and how likely it is to return.
How do you tell the five types apart?
| Type | What it looks like | Where it appears | Trigger | Realistic timeline |
|---|---|---|---|---|
| Tan | Even, diffuse darkening with no defined edges; matches sun-exposed borders | Face, neck, arms β stops sharply at clothing lines | Recent UV exposure | 4β12 weeks with sun protection |
| Post-inflammatory hyperpigmentation (PIH) | Flat brown or grey marks in the exact shape of a previous spot or injury | Wherever a breakout, cut or reaction was | Any inflammation β acne, waxing, insect bites, burns | 3β12 months |
| Melasma | Symmetrical, map-like patches with irregular borders, often mirrored on both cheeks | Cheeks, upper lip, forehead, jawline | Hormones plus UV β pregnancy, oral contraceptives, thyroid | Ongoing management; relapses are expected |
| Freckles (ephelides) | Small, well-defined light-brown dots, 1β3 mm, that darken in summer | Nose bridge, cheeks β scattered, not clustered | Genetic, activated by UV | Lighten seasonally; do not fully clear |
| Sun spots (solar lentigines) | Larger flat brown patches, 5β20 mm, with sharp borders; do not fade in winter | Cheekbones, temples, backs of hands | Cumulative lifetime UV | Slow; usually need in-clinic treatment to clear fully |
Tan or pigmentation β how do you know?
Compare a sun-exposed area against skin that never sees daylight, such as your inner upper arm. If your face is uniformly darker than that reference but the tone is even, it is a tan. If there are distinct patches sitting on top of your base tone, it is pigmentation.
Tan is the one form that genuinely resolves on its own, because it is melanin in cells that are already on their way to being shed. Skin turns over roughly every four to six weeks in adults, so a tan lifts over one to three cycles β provided you stop adding to it. Our de-tan guide for Indian skin covers what safely speeds that up and what is a waste of money.
Is it PIH or melasma?
This is the distinction people get wrong most often, and it changes everything about expectations. The deciding test is symmetry and history.
PIH is a scar-shaped mark. If you can point to the pimple, ingrown hair or scratch that was there first, and the dark mark sits exactly where it was, that is PIH. It is unilateral and scattered, following wherever inflammation happened to occur. It will fade on its own β slowly β and it responds well to niacinamide and consistent sun protection. Our article on red marks versus dark marks after acne explains why some post-acne marks are red rather than brown, and why they behave differently.
Melasma is a pattern, not a set of marks. It appears as broad, symmetrical patches with soft, irregular edges, typically mirrored across the face, and it has no preceding injury. It is strongly hormone-driven, which is why it commonly starts during pregnancy or after starting oral contraceptives, and why it flares in summer and recedes in winter. It is a chronic relapsing condition β our guide to melasma on Indian skin covers management properly, and hyperpigmentation during pregnancy covers the version that starts there.
One more clue: melasma frequently sits deeper in the skin, which makes it look greyish or blue-brown rather than the clear coffee-brown of most PIH. Deeper pigment is considerably harder to shift.
Freckles or sun spots?
Size and seasonality separate them. Freckles are small, numerous, and fade noticeably in winter. Sun spots are larger, fewer, sharply bordered, and stay put year-round.
Freckles reflect a genetic tendency in melanocytes to respond strongly to UV, and they usually appear in childhood. They are harmless and, on Indian skin, often finer and less obvious than on lighter complexions β our piece on freckles on Indian skin covers what can and cannot be changed. Sun spots represent accumulated damage, typically appear after 30, and grow slowly.
One caution worth stating plainly: any pigmented patch that changes shape, develops uneven colour or an irregular border, itches, bleeds or grows noticeably is not ordinary pigmentation and needs a dermatologist, not a serum.
What works across all five?
Two things carry nearly all the results, regardless of type.
Daily broad-spectrum sunscreen. This is not the supporting act. UV is the common aggravator of every pattern above, and without daily protection pigment re-forms faster than any treatment can clear it. In India that means SPF 50 with high PA rating, reapplied through the day β our guide to how often to reapply sunscreen covers the practical version.
A correctly dosed brightening active. Niacinamide at 10% interrupts the transfer of melanin from melanocytes into surrounding skin cells, and it is well tolerated on oily and acne-prone Indian skin, which matters when PIH is the problem. Our article on niacinamide for acne marks covers that mechanism in detail.
Expect months, not weeks. Our timeline on how long dark spots take to fade sets honest expectations by depth and type.
Frequently asked questions
Can you have more than one type at once?
Yes, and it is common β melasma on the cheeks alongside PIH from breakouts, with a seasonal tan on top. Treat the sun protection as shared, and set separate expectations for each pattern.
Which type fades fastest?
Tan, by a wide margin β typically four to twelve weeks. PIH takes three to twelve months. Melasma and sun spots need ongoing management rather than a fade timeline.
Does pigmentation come back after it clears?
Tan and PIH stay gone unless the trigger repeats. Melasma relapses in most people when sun protection lapses or hormones shift, which is why it is managed rather than cured. Freckles return each summer.
Do home remedies like lemon help?
No, and lemon in particular causes harm. Its acidity irritates skin and its furocoumarins cause a phototoxic reaction that produces more pigmentation β our article on the side effects of lemon on the face covers this. Treating irritation as progress is how PIH gets worse.
When should I see a dermatologist?
If patches are symmetrical and hormone-linked, if pigmentation has not improved after six months of consistent sunscreen and a dosed active, or if any patch is changing in shape, colour or texture.
Dermatologically tested. This article is general skincare information for healthy adult skin and is not medical advice, and it is not a substitute for diagnosis. Any changing or atypical pigmented lesion should be assessed by a qualified dermatologist.