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Tanned skin gets you noticed. Carotenoid skin gets you compliments.
preferred carotenoid colouration over melanin colouration when the two were matched.
76 of every 100 people, given the choice, picked the carotenoid glow over the tan.
Across three studies at St Andrews, faces transformed to be high in carotenoid colouration were rated more attractive than the same faces given an equivalent melanin tan — a preference that held regardless of the observer’s sex.
Six weeks is enough to see it in the mirror.
to a measurable, perceptible shift in skin redness and yellowness.
Thirty-five participants were tracked for six weeks with no makeup, self-tan or UV exposure. The colour change tracked the spectral absorption of carotenoids — not melanin — and modest increases were enough to read as healthier and more attractive.
Most people have no idea their skin tone comes from their diet.
of 800 UK adults were unaware of the link between diet and skin colour.
When shown a simple visual demonstration of the effect, 57% said it motivated them to change what they ate — equally across socioeconomic status and ethnic background.
The preference isn’t cultural. It shows up everywhere it’s tested.
studies found higher carotenoid colouration preferred — in Caucasian and Hong Kong Chinese observers alike.
The effect held for faces and for non-face body parts, but disappeared entirely for scrambled control images — the preference is for skin, not simply for the colour.
Given the controls, people tune skin toward carotenoid — not tan.
redness and yellowness — both increased when people were asked to make a face look healthy.
Participants manipulating colour-calibrated faces along CIELab axes raised yellowness and lightness while lowering melanin, mirroring the red and yellow health cues used across the animal kingdom.
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