The Art of Subtraction is evocative of a sculptor or a bonsai artist who recognizes the shape within a shape. As applied to hair, this refers to whether it is cut away, tucked, pinned, or even hair sprayed to occupy some other space. This ability to visualize beyond the border or boundary allows one to see a true form.
The Art of Subtraction is the artful and deliberate approach to altering the shape of the hair. The ultimate outcome is due to the subtraction of all other possibilities leaving only that which is most visually pleasing. Whether cutting or colouring, it is an artistic execution of a particular technique which leads to a final realized form.