3.1Debby+Do bath bombs expire?

Nearly all the ingredients used to make bath bombs have their own expiry date, which also means that bath bombs can and will eventually expire.

When talking about the shelf life of a bath bomb, this refers to how long they will retain their effectiveness and the length of time you can store them for.

The vast majority of bath bombs include ingredients like citric acid and bicarbonate soda (baking soda). As we explain below, both items have very long expiry dates, although over time, citric acid will eventually lose its potency. However, using good storage practices can help to maximise their shelf life.

The fresher your bath bomb is, the more likely it is that you will be able to enjoy its fragrance and effervescence in the water. But when exposed to moisture or water, bath bombs are likely to create an acid-base reaction.

If they are exposed to an excessive amount of moisture in the air, this can reduce the amount of fizz bath bombs will produce in the water, whilst also reducing their effective properties.