Artificial methods Edit. For crystallization (see also recrystallization) to occur from a solution it must be supersaturated. This means that the solution has to contain more solute entities (molecules or ions) dissolved than it would contain under the equilibrium (saturated solution).
Yep, good old water will instantly tighten your skin if it is cold enough. Fill a basin with half ice and half water. Submerge your face for about 10 seconds and pat dry. You skin will take on a pink hue and your pores will be closed. You can also use this trick to dry nail polish instantly.
The easiest use of whey for skin care is a whey bath. Simply add 1-2 cups of whey to a tub of fresh water. Soak for 10-20 minutes. The acidity of the whey is great for restoring the pH level of the skin, and the whey proteins will help rejuvenate skin cells. Use the same approach for your face with a whey toner.