Article L214-1 of the French Consumer Code

Unless otherwise stipulated, for any contract for the sale or provision of services concluded between a trader and a consumer, sums paid in advance are deposits, within the meaning of the article 1590 of the Civil Code.
In this case, each of the contracting parties may renege on their commitment, the consumer losing the deposit, the professional returning twice as much.

Original in French 🇫🇷

Article L214-1

Sauf stipulation contraire, pour tout contrat de vente ou de prestation de services conclu entre un professionnel et un consommateur, les sommes versées d’avance sont des arrhes, au sens de l’article 1590 du code civil.
Dans ce cas, chacun des contractants peut revenir sur son engagement, le consommateur en perdant les arrhes, le professionnel en les restituant au double.