Implementations of an oil-treated silk-lined hair weft and other hair accessories comprise an oil-treated silken material configured to attach to a hair extension weft or other hair related accessories, an oil-treated silk-lined hair extension weft, and other variations and accessories formed thereof. In some implementations, a method of using the oil-treated silk-lined hair weft and other hair accessories comprises attaching the oil-treated silken material to a hair extension weft and may further comprise attaching the oil-treated silk-lined hair weft to a wearer's head.

A hair weft includes a first hair weft unit and a second weft unit, the first hair weft unit includes a first hair strand and a first glue base, wherein the first hair strand is fixed to the first glue base, the second weft unit includes a second hair strand and a second glue base, wherein the second hair strand is fixed to the second glue base, wherein the first glue base is attached to the first glue base.

The present disclosure relates to a preassembled synthetic hair assembly featuring distinct hairstyles with predefined outer contours and an optimized manufacturing process. The disclosure includes obliquely cut ends on both sides of the hair bundle at specific angles (, ) relative to the strand length, facilitating natural layering and gradient length effects. A central fastening mechanism secures the bundle, which is then folded to achieve a desired outer contour like a waterfall, convex arc, or inverted teardrop shape. Customization is achieved by adjusting folding directions, strand length ratios (50%La/Lb80%), and incorporating additional fastening elements for varied aesthetic outcomes.

The invention is a supplemental face-framing attachment that is attached to a circular hair-extension so as to provide additional hair to areas that hair-extensions omit (e.g. face framing area).

This disclosure extends to systems, apparatus, and methods related to the creation of customized hair extensions. Systems in accordance with this disclosure may include unique tresses for creating custom hair extensions. These multi-purpose designs enable the tress to be used for different hair extension styles easily and quickly in any style and then easily attach the custom hair extensions for wear. These unique tress designs may allow for attachment to the user's hair in multiple ways. The uppermost slat may be configured for seamless sew-in attachment, a series of connection holes may be positioned for attachment to user's hair pulled therethrough by beaded or tube attachment, with upper holes allowing for a halo-style attachment, and parallel rows of slots allow for hair integration to provide attachment to the user's natural hair, with the blending of the attached wefts with the user's natural hair.

A hair weft includes a hair transplantation base and a first hair strand including a plurality of first hair elements, each first hair element includes a first end fixing end portion, a transplantation portion, and a first hair body portion, wherein the transplantation portion is embedded in the hair transplantation base, the first end fixing end portion and the first hair body portion are provided at two opposite sides of the hair transplantation base.