Surnålbätt

Surnålbätt is a Swedish term that translates literally to "sour nail polish." It is a colloquial expression used to describe a nail polish that has gone bad. This typically occurs when the polish has been exposed to air for too long, causing its components to separate or thicken. The texture can become clumpy and difficult to apply, and the color may appear dull or uneven.

The shelf life of nail polish can vary depending on its formulation and storage conditions. Exposure to heat, light, and air are the primary culprits in accelerating the spoilage process. While "surnålbätt" doesn't imply the polish is toxic, it renders it unusable for achieving a smooth and aesthetically pleasing manicure. Some individuals may attempt to revive old nail polish by adding a drop or two of nail polish thinner, though this can sometimes alter the original formula. Generally, discarded or "surnålbätt" polish is disposed of. The term is informal and commonly used in casual conversation among those who regularly use nail polish.