# The power and mystique of beauty

## Symmetry

Scientific studies have shown that one of the most attractive features to humans is symmetry, especially in facial features. The ‘phi mask’ has been used to create a clinical assessment tool to determine attractiveness and the result looks quite a lot like Angelina Jolie. Phi mask developed by Dr. Stephen R. Marquardt http://www.beautyanalysis.com/

For example, the ideal ratio of the top of the head to the chin versus the width of the head should be 1.618, based on golden ration phi 1.618. Further examples of where the ratio is said to be ideal in the human face include the width of the lips compared to the base of the nose, the measurement from outer eye to outer eye to the width of the lips, the distance from the bottom of the nose to the chin to the distance from the centre of the lips to the chin, the distance from the top of the nose to the centre of the lips should be 1.618 times the distance from the centre of the lips to the chin, and the hairline to the upper eyelid should be 1.618 times the length of the top of the upper eyebrow to the lower eyelid.

# Beauty, the perfect face and the Golden Ratio

The Golden Ratio describes two measures of any kind. Let's use line segments, as in the example below. For the measures to exist in "golden" ratio to one another, the ratio between the smaller measure and the larger one must equal the ratio between the larger measure and the sum of the two measures added together. When that's the case, the ratio is an irrational number close to 1.618, often denoted by the Greek letter Phi.