“Beauty is in the phi of the beholder.”
It has long been said that beauty is in the 'eye' of the beholder and thought that beauty varies by race, culture or era. If a face is in proportion, we are more likely to notice it and find it beautiful.
Leonardo da Vinci's drawings of the human body emphasized its proportion. The ratio is the Golden Ratio: which is based on Fibonacci Numbers, where every number in the sequence (after the second) is the sum of the previous 2 numbers:1, 1, 2, 3, 5, 8, 13, 21,34 ...Thus the Golden Ratio: Φ = 1.618 033 ...
Dr. Stephen Marquardt has studied human beauty for years in his practice of oral and maxillofacial surgery. Dr. Marquardt performed cross-cultural surveys on beauty and found that all groups had the same perceptions of facial beauty through his research. He discovered that beauty can be defined for both genders and for all races, cultures and eras with the beauty mask which he developed and patented.
Even with a perfectly proportioned face though, there are endless variations in colouring and the shapes of each facial feature (eyes, eyebrows, lips, nose, etc.) that give rise to the distinctive appearance of each race and provide for endless variations in beauty that are as unique as each individual. The human face communicates an incredible array of emotions which are an integral element of one’s total beauty.The human face conforms most closely to phi proportions when we smile.The Prophet Muhammad ( Peace be upon him) said “Even a smile is charity “
More importantly, the application of the golden ratio to beauty refers only to physical beauty, and that is only one element of what defines true beauty in humans, physical beauty is fleeting and passes with time, but other qualities of the mind and soul are the substance of true beauty.