Who invented baby powder?

Dr. Kilmer developed another J&J staple after a doctor wrote to the company in 1890 regarding a patient who'd developed a skin irritation from one of J&J's medicated plasters. Kilmer responded by sending a small tin of talcum powder and suggested applying it to the affected area. It worked so well that J&J began including the talc with many of its plaster mixes, which in turn led to the discovery that it also alleviated a more common type of skin irritation: diaper rash. Soon there was demand for a retail version, and Johnson's Baby Powder was born.