Claire de la Lune is a fictional perfume with a crescent-shaped bottle which has an important function in the episode. It’s the signature scent of Lady Elizabeth Smallwood (Lindsay Duncan) and Mary Morstan Watson (Amanda Abbington).
Boots No7 Stay Precise felt-tip eye-liner in black.
In John Watson’s bathroom there’s a tube of The Real Shaving Co. shave cream (or possibly soothing balm).
There’s a pump bottle of The Scottish Fine Soaps Company The Tub moisturizer with cocoa butter in John Watson’s bedroom.
Chopard Casmir perfume on Irene Adler’s dressing table.