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.
Use 1 tablespoon of vodka, 15 drops of cedarwood, 10 drops of geranium, and 8 drops of clove essential oil. Next, fill a dark container (I use a container with a pump cap) with filtered water. The water will keep your skin hydrated while the oils will give you astringent properties that will freshen up your face.