Though the names sound same, sateen is made of cotton instead of silk. The weaving pattern that is used to create satin is also used for creating sateen. As this fabric is made of cotton, it is much softer than satin. Nowadays satin is produced by rayon instead of cotton, which is higher in price. It has a high thread count which makes it look glossy and smooth. It is expensive than some fabrics, though cheaper than satin.