Which technique removes 50-60% of the curl from hair?

The technique that removes 50-60% of the curl from hair is the soft press. This technique involves using a pressing comb that is heated and applied to the hair, but not as intensely as a hard press or flat iron. The purpose of a soft press is to achieve a smoother appearance while leaving some texture and wave in the hair, making it an ideal choice for clients who desire a more natural look compared to styles that completely straighten the hair.

While a hard press would remove more curl and provide a straighter finish, and a flat iron can achieve a similar effect as the hard press, the soft press specifically targets a moderate reduction of curl, which is what makes it the correct answer in this context. Medium press would lie somewhere between soft and hard press, but it does not specifically indicate the exact percentage of curl removed as definitively as soft press does. Therefore, the soft press is the technique recognized for achieving approximately 50-60% curl reduction.