What primarily determines the weight of a hair extension?

The weight of a hair extension is primarily determined by the length and thickness of the weft. A weft refers to the horizontal seam or track of hair extensions that is either sewn in or glued in place. When a weft is longer and thicker, it naturally contains more hair strands, which increases the overall weight of the extension. This is crucial for professional stylists to consider, as the weight can affect how the extensions are applied and how they blend with natural hair.

Other aspects such as the brand or the type of adhesive may influence quality or application methods but do not directly determine the weight of the hair extension itself. Additionally, the color of the hair does not impact its weight; it is solely a cosmetic feature. Therefore, focusing on the dimensions of the weft provides clear guidance on understanding and selecting hair extensions based on their weight.