Which of the tool positions will result in the least volume and the least base strength?

The tool position that results in the least volume and the least base strength is the off base position. When hair is wrapped in the off base position, the roller, tool, or curl form is placed further away from the scalp, typically about one and a half to two diameters of the tool away from the base. This placement allows for a more relaxed curl and minimizes the lift at the roots. Because the hair is not situated directly against the scalp, the resulting style will have softer waves or curls without creating the added volume or base strength that comes from other positions where the tool is closer to the scalp.

In contrast, other positions like on base or half off base typically give more lift and volume because they place the tool closer to the scalp. The undirected position is more about allowing hair to fall naturally and does not focus on a definite curl pattern, often resulting in a more casual look, but still maintains some volume. Thus, the off base position is specifically utilized when a subtler and less voluminous hairstyle is desired.