Halohydrins are organic compounds that contain both a halogen atom and a hydroxyl group (-OH) attached to adjacent carbon atoms. They are typically formed through the reaction of alkenes with halogens in the presence of water. This process results in the addition of a halogen and a hydroxyl group across the double bond of the alkene. Halohydrins can serve as important intermediates in organic synthesis, leading to various chemical transformations. They are useful in the production of alcohols, ethers, and other functional groups, making them valuable in pharmaceuticals and chemical manufacturing.