Abstract: A skin treatment device includes: an elastic enclosure having a hollow center chamber with an opening at a proximal end thereof; a lip around a perimeter of the opening; protrusions and channels on the lip, which selectively: (i) permit expulsion of air and water from the chamber during initial compression of the device against the skin; (ii) terminate the flow of air and water from the chamber when the lip has been sufficiently compressed against the skin to form a seal between the lip and skin; and (iii) permit air to enter the chamber upon decompression of the device and breaking the seal; and at least one outlet valve on the enclosure configured to permit an additional flow of air and water out of the chamber during compression and to resist admission of air or water into the chamber during decompression. A skin treatment method is also disclosed.