Final answer:
The claim that processing hair for longer will make it curlier is false. Over-processing can damage the hair, and it's important to follow professional recommendations and consider one's hair health.
Step-by-step explanation:
The statement 'To achieve curlier hair, always process it longer' is false. Processing hair for longer periods of time can lead to over-processing, which may result in hair damage such as breakage and dryness. To get curlier hair, it's important to follow the recommended time for the hair treatment used, like perming solutions, and consider the hair's type, health, and condition.
Moreover, different types of curling techniques or tools can be tuned to achieve the desired curl without overprocessing. It is always advised to consult a professional hairstylist before undergoing chemical treatments.