Abstract: There is a skin analysis device for attachment to an electronic device of a human user, the electronic device having at least one skin characteristic measurement device, the skin analysis device comprising an enclosure comprising an enclosure body, configured to be removably connected to the electronic device and one or more skin characteristic measurement assisters, connected to the enclosure and configured to assist one or more skin characteristic measurement devices take a skin characteristic sample of a skin characteristic of the human user.

Abstract: There is a sunscreen detection device for detecting a sunscreen product, the sunscreen detection device comprising: a substrate; a first light, disposed on the substrate and controllably coupled to a processor, controllable by the processor to emit light at a first light wavelength at the subject's skin when the sunscreen detection device is oriented to emit light on the subject's skin; a first light sensor circuit, disposed on the substrate and communicatively coupled to the processor, capable of sensing a percentage absorption of light by the subject's skin at the first light wavelength (% AbsAtWL1) and communicating the % AbsAtWL1 to the processor; a processor, configured to: cause the first light to emit light when the sunscreen detection device is oriented to emit light on the subject's skin; record the % AbsAtWL1 from the first light sensor; and assess a level of sunscreen protection based at least on the % AbsAtWL1.