As a face ages, the difference in redness between the lips and the surrounding skin decreases, as does the brightness difference between eyebrow and forehead. This is why lipsticks and highlighters work! Contrasting colors of eyes, hairs and other features can make one look youthful. (Young children and babies have brighter looking eyes and paler skin!)
In one research experiment, Russell and his team measured images of 289 faces ranging in age from 20 to 70 years old, and found that through the aging process, the color of the lips, eyes and eyebrows change, while the skin becomes darker. This results in less contrast between the features and the surrounding skin — leaving older faces to have less contrast than younger faces.1
To sum it up, increase the contrast in your face to look younger without getting any work done! If you are a Photoshop-my-face kind of gal, increase that color contrast before you send your family photo newsletter out. Or simply add a touch of blush, lip color or anything that gives you a bit more color where age has robbed color from you.
This study isn’t a reason to rush out and buy tons of makeup, but it is reassuring to know that some signs of aging can be slightly countered.