A distance between a surface of a treatment head and tip opening of a skin treatment hand piece is adjustable. In an implementation, the distance is adjusted by moving the tip opening relative to the treatment head surface. Different distances may be used to treat different skin types, problems, and conditions. In an implementation, the hand piece includes a fluid delivery and a vacuum or suction mechanism to provide various therapeutic benefits to the skin.

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.

Disclosed herein are apparatuses, systems, kits, and methods for treating skin, such as skin tightening or for treating diseases, disorders, and conditions that would benefit from tissue area or volume reduction, skin restoration, skin tightening, skin lifting, and/or skin repositioning and/or for generally improving skin function or appearance (e.g., the removal of unwanted skin features or irregularities such as sebaceous glands, sweat glands, hair follicles, necrosis, and fibrosis). Such apparatuses, systems, kits, and methods comprise an apparatus having a handheld main body and a detachably attachable tip comprising one or more needles.