The distinctive black bottle sitting on a dresser in Leigh’s bedroom is Lanvin’s iconic boule noire containing Arpége, a floral aldehyde fragrance created by Paul Vacher and Andre Fraysse and launched in 1927.

The advert above dates back to 1978, the year in which the film was released, and shows exactly the bottle seen in the film.

The hairbrush on her dresser is by Mason Pearson.

Thanks to Amy in the comments for the hairbrush id.