1. A method of assessing the skin quality of a human subject, the method comprising: determining the presence or absence of polymorphisms in MMP1, SOD2, and GPX1 in a biological sample from the human subject to provide a genetic skin score; and determining a predicted skin feature quality score corresponding to a skin feature selected from the group consisting of skin wrinkles, skin spots, decreased skin tension, decreased skin radiance, and skin texture roughness by applying a predictive equation corresponding to the skin feature to the genetic skin score, wherein the predictive equation corresponds to the skin feature and is determined by a regression analysis of data obtained from a control group comprising members whose ages span at least two decades, the data comprising: (i) a genetic skin score of each member of the control group, and (ii) a plurality of measurements corresponding to each member of the control group, wherein the plurality of measurements are associated with the skin feature and calculated from an image analysis of a skin surface of each member of the control group, and wherein the predicted skin feature quality score is representative of a risk of the human subject developing the skin feature.