Abstract: A skin treatment device configured to selectively operate in hydradermabrasion mode and in massage mode. The skin treatment device includes a working end and a plurality of interchangeable working attachments that can be selectively mounted to the working end. The working attachments includes at least one hydradermabrasion tip and at least one massage head. The device includes a liquid delivery system for moving liquid from a supply canister to the working attachment and from the working attachment to the waste receptacle. The hydradermabrasion tip includes a supply aperture for delivering liquid to the target region of skin and a return aperture for returning liquid from the target region to the waste receptacle. The device may include a red-light therapy system for delivering red-light therapy to a target region. The red-light therapy system may include a plurality of red LEDs positioned to emit red light through an installed working attachment.

Abstract: A cap device for scalp care is provided. The cap device includes an interior cover, an exterior cover coupled to the interior cover, a substrate, and a blower. The interior cover covers the scalp, and has emitting holes for emitting air. The exterior cover defines an air flow passage along the interior cover, and has a vent hole for sucking air. The substrate is coupled to the interior cover in the air flow passage to cover an outer surface of the interior cover. The substrate has laser diodes, infrared ray and red light emitting diodes, and through holes corresponding to the emitting holes. The blower communicates with the air flow passage at an upper end of the interior cover. The blower sucks air through the vent hole and emits the air to the scalp through the emitting holes via the air flow passage.