Red lips make a woman look younger
A new research claims that make-up makes women appear younger by increasing the contrast between facial features and skin tone.
The study by a professor from Gettysburg College in Pennsylvania suggests the changing contrast of facial features is one of the cues people unconsciously use to decipher a woman’s age.
The discovery of this cue to age perception may partly explain why cosmetics are worn the way they are, the study claims.
Cosmetics are commonly used to increase aspects of facial contrast, such as the redness of lips.
Scientists propose that this can partly explain why make-up is worn the way that it is – shades of lipstick that increase the redness of the lips are making the face appear younger, which is related to healthiness and beauty.
“Unlike with wrinkles, none of us are consciously aware that we’re using this cue, even though it stares us in the face every day,” said Richard Russell, a professor of psychology at Gettysburg.
Richard Russell collaborated with researchers from cosmetic giant Chanel’s R&D division dedicated to skin related issues and facial appearance.
In one study, Prof. Richard Russell and his team measured images of 289 faces ranging in age from 20 to 70 years old, and found that the ageing process makes the lips, eyes and eyebrows paler, while surrounding skin becomes darker.This results in less contrast between the features and the surrounding skin –leaving older faces with less contrast than younger faces.
The difference in redness between the lips and the surrounding skin decreases, as does the luminance difference between the eyebrow and the forehead, as the face ages.
Although not consciously aware of this sign of ageing, the mind uses it as a cue for perceiving how old someone is, the research claims.
Prof. Richard Russell told Radio 4′s Material World programme: “The kind of contrasts that decreased was the contrast between the facial features – the lips, the eyes and the eyebrows with the surrounding skin.
“So, for example, we found that the redness of the lips decreases with ageing, but the skin that surrounds the lips actually becomes more red, so the redness contrast between lips and the rest of the face decreases with age and that certainly is something that can be manipulated with make-up.”
To confirm this hypothesis, the researchers carried out a further study involving more than a hundred subjects in Gettysburg and Paris, in which they artificially altered these facial contrasts using a computer.
They found that increased contrasts led observers to perceive faces as younger, while when they artificially decreased contrasts the faces appeared older.
Prof. Richard Russell’s findings appear in a study in the open access journal PLoS ONE.
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