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.
Aloe vera is best when it comes to firming and tightening loose skin. The malic acid in aloe vera gel helps improve the elasticity of your skin and get rid of sagging skin. Plus, it is a natural moisturizer for your skin. Extract the gel from an aloe vera leaf and smear it on your face and neck. Leave it on for 15 to 20 minutes and then wash it off with lukewarm water.