Abstract: An apparatus for displaying the necessary suntan lotion and the skin care includes a UVA sensor and a UVB sensor respectively electrically connected to an operational amplifier that is electrically connected to a micro-processor for transmitting signal to the micro-processor. A UVA/UVB selector and a skin property selector are respectively electrically connected to the micro-processor for providing a calculating factor to the micro-processor. A series of LED is electrically connected to the micro-processor for showing the suggests from the micro-processor. A speaker is electrically connected to the micro-processor for reminding the user to select a suitable suntan lotion.