While bath salts have been around for ages, bath bombs are a newer invention. Bath bombs are made with sodium bicarbonate and a variety of oils, fragrances, colorants, and additives like flower petals and glitter that are all tightly packed together into a spherical shape. When tossed into a tub full of water, the sodium bicarbonate in the bath bomb will cause it to break apart, releasing the salts, oils, scents, and colorants into the tub so that your bathwater becomes brightly colored and scented. Bath bombs are also typically filled with skin conditioning ingredients and special additives, like glitter, that may also be released into your bath. It is important to know that for anyone with sensitive skin, some of the ingredients in bath bombs may be irritating. The dyes used may also stain your tub. However, many people find the sensory experience of bath bombs that color and scent your warm bath to be relaxing and beneficial. If you're new to bath bombs, consider purchasing a brand that keeps artificial colors, dyes, and irritating ingredients to a minimum until you know how your skin will react. You may also want to do a quick skin test on your wrist or ankle before fully submerging your body in your bath.