This vinegar-based herbal extract comes from an old recipe passed down from the 16th century. The plague was wreaking havoc in Central Europe and daring thieves plundered the houses of the ill without getting sick. Apprehended and put on trial, they admitted the secret of how they protected themselves from infection: the vinegar of the thieves. Prepared with herbs like lavender, sage, rosemary and cloves, this vinegar has a strong disinfecting power and has positive effect on the acid mantle of the hair, making it more supple, more easily combed and protecting it from head lice.