Fixing device for hair extensions and hair extensions

A fixing device for hair extensions, wherein the fixing device comprises a first soft board, a second soft board and a third soft board, the first soft board, the second soft board and the third soft board are successively connected;

• the first soft board is bonded to the second soft board, the second soft board is bonded to the third soft board;
• the hair extensions comprise hairs, the hairs are connected to the third soft board and/or the second soft board, and the third soft board is arranged between the hairs and the second soft board;
• a plurality of hair extension groups are connected to the first soft board;
• each hair extension group is formed by the second soft board and the hairs, or the third soft board and the hairs;
• the fixing device further comprises a fixing piece, the fixing piece is connected to the first soft board, and the first soft board is arranged between the fixing piece and the third soft board;
• the fixing piece comprises a frame body, a positioning strip and multiple fastening portions, the positioning strip is connected to the frame body, and the fastening portions are detachably fixedly connected to the frame body;
• and
• the fastening portion comprises a connecting portion, an abutting portion and a positioning portion, the positioning portion is arranged at an end of the fastening portion, the abutting portion is connected with the connecting portion and the positioning portion, and the connecting portion is detachably fixedly connected to the frame body;
• the positioning portion has a curved surface;
• when the fixing piece is deformed to a closing state, the abutting portion and the positioning portion are both abutted to the positioning strip, such that real hairs of a user may be clamped between the fastening portions and the positioning strip.