I’m a bit of a multitasker: in a lot of Allkinds products, I help adjust pH levels so they can keep your skin healthy, fresh, and balanced—in bath bombs, I’m a bit more fun. I create the fizzy, bubbly effect they have when they’re dropped in your tub, which helps reveal their cool colours too.

I’m a naturally occurring fruit acid found in citrus fruits like lemons and limes. I’ what gives them their tart, tangy taste. Commercially, citric acid is usually made from corn, sugar cane or wheat.