9 Wearable measuring device comprising of a sensor for measuring UV radiation and skin PH levels; downloadable computer software for receiving, processing, measuring, transmitting, displaying and uploading information regarding an individual's exposure to UV radiation and other environmental external factors in the nature of pollution, pollen, heat and humidity and providing warnings and notifications when such exposure will impact upon one's skin, personalized information and customized skincare recommendation to improve one's healthy skin habits and data to allow users to track their exposure to such environmental external factors; downloadable computer software for receiving, processing, measuring, transmitting, displaying and uploading information regarding an individual's skin PH levels; downloadable computer programs for receiving, processing, measuring, transmitting, displaying and uploading information regarding an individual's exposure to UV radiation and other environmental external factors in the nature of pollution, pollen, heat and humidity and providing warnings and notifications when such exposure will impact upon one's skin, personalized information and customized skincare recommendations to improve one's healthy skin habits and data to allow users to track their exposure to such environmental external factors; downloadable computer programs for receiving, processing, measuring, transmitting, displaying and uploading information regarding an individual's skin PH level and providing personalized information, customized skincare recommendations and data to allow users to track their skin PH levels; downloadable mobile applications for smartphones, mobile phones and personal digital assistants for receiving, processing, measuring, transmitting, displaying and uploading information regarding an individual's exposure to UV radiation and other environmental external factors in the nature of pollution, pollen, heat and humidity and providing warnings and notifications when such exposure will impact upon one's skin, personalized information and customized skincare recommendation to improve one's healthy skin habits and data to allow users to track their exposure to such environmental external factors; downloadable mobile applications for receiving, processing, measuring, transmitting, displaying and uploading information regarding an individual's skin PH level and providing personalized information, customized skincare recommendations and data to allow users to track their skin PH levels