The only thinner which may be used to thin a bottle of Seche Vite; no other thinner may be used to thin Seche Vite.
Seche Vite is a dry fast top coat and will thicken, which must be assumed.
Seche Restore is the only way to return a bottle of Seche Vite to its original consistency.
It may also be used to restore any other nail lacquer product whether one produced by Seche or any other brand.
Use by adding a few drops until consistency is fully restored.

SECHE Seche Restore works great to restore any nail lacquer to its original consistency. Includes dropper and holder. 2 oz.