voštan

1. wax; waxen
   Na stolu je gorela voštana sveća. — A wax candle was burning on the table.
   U muzeju smo videli voštane figure poznatih ljudi. — At the museum we saw wax figures of famous people.
2. (of a face, skin) waxen; deathly pale
   Posle bolesti lice mu je bilo voštano. — After the illness his face was waxen.

In the sense 'made of wax' the form voštani is more common.