Why do some people get sunburnt in twenty minutes while others tan all summer without going red? The answer comes down to one word: phototype. Developed in 1975 by the American dermatologist Thomas Fitzpatrick, this classification into six categories describes the skin's natural sensitivity to ultraviolet rays. It's'one of the simplest, and most useful, markers for assessing your skin-cancer risk and adapting your protection.
1. Phototype isn't skin colour
Phototype and complexion are often confused. Complexion is the visible colour of your skin. Phototype is a broader notion: it includes how the skin reacts to the sun (does it burn? does it tan?), but also eye and hair colour and the tendency to freckle. Two people with a similar complexion can therefore have a différent phototype, and a différent risk. It's this réaction to the sun that matters most, because it reflects the amount of melanin, the pigment that naturally protects the DNA of skin cells.
2. The six phototypes of the Fitzpatrick scale
The scale runs from phototype I, the fairest and most fragile, to phototype VI, the darkest and best naturally protected.
| Phototype | Skin & hair | Réaction to the sun | Recommended protection |
|---|---|---|---|
| I | Very fair skin, freckles, red or strawberry-blond hair | Always burns, never tans | SPF 50+ |
| II | Fair skin, blond to light-brown hair, light eyes | Burns easily, tans little and with difficulty | SPF 50+ |
| III | Fair to slightly olive skin, brown hair | Burns moderately, tans gradually | SPF 30 to 50 |
| IV | Olive skin, brown hair, dark eyes | Rarely burns, tans easily and well | SPF 30 |
| V | Dark brown skin, black hair | Very rarely burns, intense tan | SPF 30 |
| VI | Black skin, black hair and eyes | Almost never burns | SPF 30 |
To place yourself, ask the key question from your check-up: what would happen if your skin were repeatedly exposed to summer sun with no protection? "I always burn and never tan" points to phototype I-II; "I tan easily without burning" to phototype IV to VI.
3. Phototype and skin-cancer risk
The link is direct: the less melanin the skin contains, the less it filters UV, and the higher the skin-cancer risk.
- ●Phototypes I and II: the highest risk on the whole scale. Their melanoma incidence is estimated to be 10 to 20 times that of phototypes V and VI. Easy sunburn, little protective tan: vigilance must be maximal.
- ●Phototype III: intermediate risk, often underestimated because the skin "ends up tanning." Sunburn remains common early in the season.
- ●Phototypes IV to VI: lower risk thanks to better natural protection (eumelanin is équivalent to an SPF of about 8 to 15), but never zero. UV damage keeps accumulating deep down.
4. Dark skin: less risk doesn't mean no risk
This is prévention's blind spot. Because we associate skin cancer with fair skin, darker phototypes are watched less, and are often diagnosed later, at a more advanced stage.
- ●Acral melanoma: it develops on the palms, soles of the feet and under the nails. A key feature: it isn't linked to the sun, so sunscreen doesn't prevent it. It affects all phototypes and remains the most common form in dark skin. This is the cancer that took Bob Marley in 1981.
- ●Other vulnerabilities: phototypes IV to VI are also more prone to melasma ("pregnancy mask"), to post-inflammatory hyperpigmentation and to keloid scars.
The lesson is simple: whatever your phototype, also inspect the areas we never look at, palms, soles, under the nails, and consult at any change.
5. Adapting your protection to your phototype
Knowing your phototype lets you calibrate your sun protection without falling into two traps: thinking yourself invincible, or on the contrary needlessly depriving yourself of the outdoors.
- ●Phototypes I-II: SPF 50+ systematically, covering clothes, shade at peak hours (noon-4 p.m.). Protection comes before tanning, which won't happen anyway.
- ●Phototypes III-IV: SPF 30 to 50 depending on sun intensity, reapplied every two hours and after swimming.
- ●Phototypes V-VI: at least SPF 30 during prolonged exposure, and a daily anti-UV care product to limit pigment spots.
- ●For everyone: no phototype exempts you from monitoring your skin. A baseline dermatological exam, especially with family history or many moles, remains the best insurance.
💡 Key tips
- Your phototype is written into your genes: it doesn't change with tanning. A tanned complexion in summer doesn't "strengthen" your skin, on the contrary it signals damage already done to your cells' DNA.
- Phototypes I and II have a melanoma risk 10 to 20 times higher than phototypes V and VI. The fairer your skin, the stricter the protection must be, SPF 50+ non-negotiable.
- The most telling test: what happens if you go out unprotected? "I always burn" points to fair, very-high-risk skin; "I tan without going red" to a darker phototype, better protected but not invulnerable.
- Dark skin doesn't mean safe skin. Acral melanoma (palms, soles, under the nails) isn't linked to the sun and affects all phototypes, it's the cancer that took Bob Marley. Remember to inspect these rarely-checked areas.
- Whatever your phototype, a minimum daily SPF 30 and a baseline dermatological exam let you tailor your monitoring. Phototype is valuable data to know for your health check-up.
