Bickmore Bick 4 Leather Conditioner conditions, cleans, polishes, and protects leather. It is specially formulated to preserve all smooth finished leather. It is ideal for reconditioning old or dry leather. Bick 4 will not darken leather. Bick 4 is recommended for all leathers, even exotics! Bick 4 will not leave a sticky or gummy residue behind. Try it on your leather clothing, as well as furniture, car interiors, purses, and more!