Burns or Tans

Your result, the DNA positions behind it, and what the research says.

6/10 confidence.

About Burns or Tans

Skin responds to ultraviolet light in two ways. It can make more eumelanin, the brown pigment that absorbs UV and shows up as a tan, or it can make comparatively little and go straight to inflammation, which is sunburn. Which route dominates is set by how the pigment machinery is tuned. This card reads three genes in that machinery: the enzyme that starts pigment production, a regulator that sets how much is made, and the switch that chooses between brown and red-yellow pigment. Reading all three gives a far better picture than any one of them, and none of them changes what sunlight itself does.

Good to know: A tan is pigment built in response to ultraviolet damage, and the protection it gives against later exposure is small. Three separate pigment genes contribute, which is why one position answers this badly. How gradually you build exposure matters more than any of these variants.

Fun fact: The pigment that makes a tan and the pigment that makes red hair are made by the same cells from the same starting material; a single switch decides which one gets built.

Discovery: The pigment genes behind sun response were mapped through studies of hair and skin color from 2007 onward.

The Variants

The 3 positions this trait reads

Gene: TYR, IRF4, ASIP

rs1393350 TYR - pigment enzyme, reduces tanning response

rs12203592 IRF4 - pigment regulator, raises freckling and burning

rs4911414 ASIP - pigment switch, raises sunburn proneness

Location: Chr 6:396,321

dbSNP rs12203592

The studies

Prediction of skin color, tanning and freckling from DNA in Polish population: linear regression, random forest and neural network approaches (Zaorska K et al., Human genetics, 2019)

Other lifestyle traits

Age Spots: A change in the promoter of the telomerase gene, linked to how many flat brown sun spots appear on skin over the years.

Hair Density: A change in a guidance receptor gene, linked in an East Asian study to how densely hair grows on the scalp.

Blond Hair: The pigment switch beside KITLG, the single best-known genetic driver of naturally blond hair in people of European descent.

Back to All Traits

Content updated September 2026.

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