How can you use different techniques to show flesh colour tones on the human figure?

Cosmetic colour was also used to enhance the reds of the flesh tones with 'madder' a red powder or brazil wood. However this was criticised by a Renaissance art historian who thought it 'falsifies the freshness of living skin'. An example of this is in Titains painting 'Tarquin and Lucretia'

Paintings of Geisha women and Queen Elizabeth I for example, where there faces are painted completely white and flat are the kind of paintings that I want to avoid, I want to explore how different techniques are used to show the true hard core colours, like the pinks, reds, blues, greys, greens, browns and how people with different colour skins other than white are shown, rather than cosmetic colours.

My aim for unit 5 practical study, is to study the techniques of Georges Seurat, Paul Gauguin,

Edgar Degas and Jenny Saville. All are very different and use different techniques. From this I want to develop my own style influenced by one or more of the artists to create my own final piece/s.