1. Definitions and issues

Obsolescence is not a new phenomenon. It is inescapable, as it is closely linked to innovation and technological progress, which progressively lead to products becoming technically outdated or no longer adapted to new uses. Take, for example, the transition from perforated paper to vinyl records, cassettes, CDs, USB sticks and then to online storage or streaming spaces like Deezer. Here we're dealing with obsolescence driven by technological innovation.

In the world of fashion (hairstyles, clothing, etc.), we can observe a similar phenomenon which, while not having the same causes, produces the same effects: the obsolescence of a hairstyle or style. Here, obsolescence is generated by changing consumer tastes, sometimes sparked by haute-couture houses, major ready-to-wear brands or induced by media personalities.

So, as new needs evolve,...