FIGURE 7.

Prediction structure: Example of the evolution model of forehead wrinkle evolution in individuals with a phototype V or VI, The “Beauty Trajectory” is derived from the sum of the overall exogenous impact and Chronos. The severity grades for wrinkles 15 years into the future are determined by adding the baseline wrinkle severity grade to the Beauty Trajectory. It is important to note that the Beauty Trajectory is locked at 0, ensuring that the model does not project any form of rejuvenation.