Research shows that even infants as young as 6 months old show a preference for attractive faces compared to unattractive faces. Studies have found that facial attractiveness is associated with symmetry, youthfulness, and averageness. When composite images are created by averaging multiple faces together, the more faces included in the composite, the more attractive it is rated. However, symmetry is less important for perceptions of art compared to equilibrium or balance. Cultural standards of beauty also vary across time and societies.

2. What is beauty? One may as well dissect a soap bubble. We know it when we see it—or so we think. Philosophers frame it as a moral equation. What is beautiful is good, said Plato. Poets reach for the lofty. "Beauty is truth, truth beauty," wrote John Keats, although Anatole France thought beauty "more profound than truth itself."

3. Psychology understaning of beauty We know it when we see it—or so we think. Beauty is something intuitive and common for people. Research show that even 6 month old babies “understand and see beauty”

6. Image morphing

7. Image morphing College students rated the male and female composite faces as significantly higher in attractiveness than the individual faces used to create them, if the composites had at least 16 different faces in them. Thus, averaged faces are attractive. Note that when we use the word, "average," we mean the arithmetical mean, and not an average-looking person. If, for example, you take a female composite (averaged) face made of 32 different faces and overlay it on the face of an extremely attractive female model, the two images line up almost perfectly indicating that the model's facial configuration is very similar to the composites' facial configuration.

14. Paul Cezanne, Madame Cezanne on yellow armchair

17. Golden ratio

18. Fibonacci spiral

23. Beauty as innocence and charm