As with all masks, their action on the skin depends on their ingredients. Some will have a hydrating effect and oils will move into the skin and some will contain more clay based ingredients and will therefore absorb oil from the skin.
The fact that a company has formulated their mask to be 'peel-able' doesn't change its action. Some will emit oils and some will absorb oil.
Study mask ingredients further and then you will be able to read the main ingredients listed on a mask product to further your knowledge on how & why it works.