How does nail polish dry?

By the evaporation of the alcohol in the fluid, leaving only the colouring chemicals, which harden, and are a bloody nuisance to get off anything!How does nail polish dry?
Nail varnish contains acetone which is a solvent that evaporates at room temperature on exposure to the air. That is what the smell is and why it takes longer to dry when it is cold... and why it dries out if you don't put the lid back on properly. The colouring part is mixed with the acetone in the bottle to dilute it and to prevent it bonding. As you apply it, it thickens as the acetone evaporates; allowing the molecules to join up in firm bonds which are left behind on the nail as a sheet of colour. The varnish is stronger if it is built up with a few thin layers rather than one thick coat. Some varnishes add nylon or silk to encourage and strengthen the bonding process.





Nail varnish remover is also acetone and breaks up the bonds of the varnish, liquifying it again.





Clever heh?How does nail polish dry?
Once spread out the solvent evaporates and allows the varnish to form a tough coat.





xxR
Slowly.
same way paint does. but my varnish is always lumpy
How long does it take for nail varnish to dry?


Nail varnish does not dry, it sets. It is a varnish rather like gloss paint and it needs time to fully harden. A least an hour after you leave should be allowed before the varnish is fully set.
A combination of exposure to the air and chemical evaporation.
by blowing on it

computer security