Computer hardware and software systems for mobile phones, portable media players, handheld computers, namely, hardware and software systems for capturing images of skin of human subjects along with user-responses to subjective and objective questionnaire, geo-demographically segmenting the human subjects as well as analyzing the captured images and the user-responses to the questionnaire, geo-demographically profiling the human subjects based on the results of the segmentation as well as analyses, geo-demographically categorizing the human subjects based on the profiles, recommending skincare products, regimens and solutions and tracking efficacy of the recommendations, thereby facilitating targeted advertising and sales of skincare products, regimens and solutions based on dermatological demographics; Computer software and hardware for mobile phones, portable media players, handheld computers, namely, hardware and software systems for capturing images of skin of human subjects along with user-responses to subjective and objective questionnaire, geo-demographically segmenting the human subjects as well as analyzing the captured images and the user-responses to the questionnaire, geo-demographically profiling the human subjects based on the results of the segmentation as well as analyses, geo-demographically categorizing the human subjects based on the profiles, recommending skincare products, regimens and solutions and tracking efficacy of the recommendations, thereby facilitating targeted advertising and sales of skincare products, regimens and solutions based on dermatological demographics