Final answer:
An outline shave does not always include the hairline at the forehead because it is a stylistic choice. Shaving the hairline is a significant change that relies on the individual's desired look, and should be done by a professional stylist.
Step-by-step explanation:
An outline shave does not always include shaving the hairline at the forehead. The choice to shave the hairline is a stylistic one and depends on the desired look and hair type. For instance, in some haircuts, a crisp edge at the forehead enhances the overall shape of the hairstyle, whereas in others, it may not be necessary to achieve the desired effect.
Since the hairline is quite prominent, altering it can significantly change one's appearance. Shaving the hairline should be done cautiously, and often it is best left to a professional stylist who considers factors like face shape and hair growth patterns.
Outline shaves and the creation of hairlines are part of a hairstylist's technique to achieve the visual illusion of sharp, clean edges and to define the shape of the haircut, much like an artist uses lines to define shapes and add dimension in a drawing. For example, the technique of hatching used in drawings to create shadows and three-dimensional form is similar to the precision a stylist employs in creating texture and dimension with a haircut.
In conclusion, whether or not to include the forehead hairline in an outline shave is a matter of personal preference and style and does not have a standard practice. Proper consultation with a stylist can ensure the chosen hairline compliments one's features and hairstyle preference.