They have changed the ingredients quite a few times and it used to contain acetone but that was a long time ago.
Here are the latest ingredients;
INGREDIENTS: WATER\AQUA\EAU, ALCOHOL DENAT., GLYCERIN, SALICYLIC ACID, HAMAMELIS VIRGINIANA (WITCH HAZEL), MENTHOL, TREHALOSE, SODIUM HYALURONATE, BUTYLENE GLYCOL, CITRIC ACID, SODIUM HYDROXIDE, DISODIUM EDTA, BHT, PHENOXYETHANOL, BENZOPHENONE-4, RED 6 (CI 15850), RED 33 (CI 17200), VIOLET 2 (CI 60730), [ILN37004]
I think they advertise it more as an exfoliant!
I personally have never or ever would use a toner.