A poly(nitrogen/amine) derivative of a natural wax of formula I, and ophthalmic compositions and contact lens care solutions that contain the poly(nitrogen/amine) derivative of a natural wax of formula I. Preferred naural waxar beeswax, lanolin, jojoba or PEGylated lanolin or jojoba. The invention is also directed to a method of treating a patient with dry eyes, the method comprising instructing a patient to administer one or more eye drops of the ophthalmic composition that includes apoly(nitrogen/amine) derivative of a natural wax of formula I.
