This is an old and empty 4 oz bottle for a hair tonic from the past.

Introduced in 1900, this product has been used for many styling purposes for men. 

Brilliantine is a hair-grooming product intended to soften men's hair, including beards and moustaches, and give it a glossy, well-groomed appearance. It was created at the turn of the 20th century by French perfumier Edouard (Ed) Pinaud.