It is perspiration, most commonly known as sweat.
The process by which mammals give off water through the pores of their skin is called diaphoresis, or transpiration, perspiration or perspiring, sweat or sweating. The moisture released is generally called sweat, or perspiration. More data can be found at the link, below.
No. No.
Water can, and does, move through the pores of human skin. Sweat (mostly water) is excreted (out) through skin pores. Additionally, some water is absorbed (in) through the skin pores. However, most water that is absorbed through the skin, enters through the stratum corneum, the outermost layer of the skin. This is what makes skin pruney, when a long time is spent in the water. Human skin can absorb a wide variety of other chemicals, as well. This is why the delivery of some medications is accomplished using a patch.
You CAN use alcohol to tighten your pores, but at a price. Your skin needs moisture, and alcohol depletes it of moisture. When your skin is dried out artificially, your body tells it to make more moisture (oil), which will wind up enlarging your pores. This is a vicious cycle. A much better choice is to use products designed for this purpose, which will keep your skin balanced.
Sweat
Tiny pores on the skin (epidermis)
Yes
The body perspires through the pores in the skin.
Pores Many things: hair follicles are the openings where hairs come out; pores are the openings where air and oil come out; how about nostrils, mouth, etc. .....
Sweat is secreted through pores in the skin.
Yes. They can also absorb moisture through their skin.
They are called pores.