Gypsophila are annual and perennial herbs often growing from a thick taproot or a branching caudex, sometimes with rhizomes. The stems are usually erect and branching or sprawling, or in a few species prostrate along the ground. The leaves are variable in shape. The inflorescence is usually a cyme or a thyrse, branching intricately. Each small flower has a cup-like calyx of white-edged green sepals containing five petals in shades of white or pink. The fruit is a rounded or oval capsule opening at valves. It contains several brown or black seeds which are often shaped like a kidney or a snail shell.A few species are commercially cultivated for several uses, including floristry, herbal medicine, and food. The baby's-breath most commonly used in flower arrangements such as bouquets is the common gypsophila, G. paniculata. G. elegans is also used as a cut flower.
- The genus is a source of saponins that can be used for many purposes, including the production of photographic film and hemolytic laboratory reagents. Their detergent qualities make them useful in soap and shampoo. G. rokejeka is used to make the dessert halva. Species are also ingredients in liqueur, cheese, and ice cream, providing flavor, aroma, and crispness to foods.Several species are hyperaccumulators of boron, and may be planted to absorb the element from polluted soils