What is the term used to describe a guide that is located inside the haircut, creating less weight and more softness to the perimeter?

The term that describes a guide located inside the haircut, which creates less weight and contributes to a softer perimeter, is indeed an interior guideline. This technique involves cutting hair at various lengths within the interior of the style, allowing for a more blended appearance and lightness in the overall shape. By employing an interior guideline, a stylist can remove bulk and create movement, ensuring that the hair falls more naturally around the face and body. This method contrasts with exterior guidelines, which are typically found at the outer edges of the haircut and are used to define the overall shape and length. Consequently, using an interior guideline effectively enhances the softness and flow of the hairstyle, making it a valuable technique in hair cutting.