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.
Green tea and sugar scrub. If you want a home remedy to help tighten your skin and give you a natural glow, apply some green tea with granulated sugar and water. Split open the tea bag and use the green tea with sugar and water. Mix these well and apply it all over your face for an all natural exfoliating face scrub.