Founded on 34 Boulevard Saint-Germain by a trio of French designers, its brand name is derived from the Ancient Greek word Diptych, meaning a two-panel image, a reflection of the designer's early interest in cryptography.

[1] The company produces perfumes (colognes), scented candles, skincare, soaps, and oil diffusers.

[3] The first shop they opened sold fabric designs and various decorative items, but by 1963, they had introduced scented candles.

[4] The signature black and white labels affixed to the candles were designed and hand-drawn by Knox-Leet.

[5] After Knox-Leet's sudden death in 1993, following an operation for appendicitis, Coueslant took over the design of the labels, and Mohamed Lataoui, another friend, became managing director.