What defines the visual line in a haircut where hair ends hang together?

The weight line in a haircut is defined as the visual line where the ends of the hair hang together and create a distinct silhouette. This line signifies the area of concentration for the hair's weight, affecting how the hair falls, moves, and appears in terms of fullness. When hair is cut, the weight line is where the strands that have the most weight collectively meet, shaping the overall look of the haircut.

Understanding the weight line is crucial for achieving desired styles, as it influences the balance and form of the haircut. For instance, a heavy weight line might contribute to a more blunt, structured look, while a lighter weight line could provide a softer, layered effect. This aspect of hairstyling enables a stylist to manipulate and customize a client's haircut based on their personal style or face shape.

The other concepts mentioned, such as layer line, style line, and section line, refer to different aspects of haircut design and structure but do not specifically define where the hair ends meet visually to create weight. Thus, the weight line primarily identifies the area where these ends hang together and is vital for any hairstylist to understand in order to execute cuts that effectively express the desired hairstyle.