Bonding is an approach to hair weave that lasts for a shorter period of time in comparison to sew-in weave. It involves the application of hair glue to a section of wefted hair then onto a person’s natural hair; special hair adhesives are used in bonding to prevent damage to one’s natural hair. This technique is commonly used and does not cause damage to the hair unless taken out without proper directions from a professional. It is advised that weave bonding be installed for up to 3 weeks because the glue begins to loosen up and lessens the attractiveness of the hair. There are 2 types of bonds: soft bond which is flexible and comfortable to wear and are made using latex,acrylic or silicon and hard bond which is the professional name for super glue. Hard bond adhesives last longer than soft bond adhesives because it is not water based and therefore does not fall apart. Nonetheless, the hard bond adhesives are not as comfortable as the soft bond adhesive because they are rigid. These bond attachments generally last 4–6 weeks before a maintenance appointment is necessary.
The misnomer of ‘tracks’ comes from the common, long-lasting method of integrating wefts, known as the ‘track and sew’ method. The ‘tracks’ are usually cornrows, braided in the direction of how the hair will fall. Toward the face or away, with or without a part, the tracks build the foundation of how the end result will look. The wefts are then sewn onto the braids, usually with a specially made, blunt-ended needle. The needle can be curved or straight. There are many different colors of specially-made thread to choose from, depending on what color of hair you will be integrating. Darker hair lends to darker thread. It should also be noted that when the hair is braided at a high level of tension, the client is at risk for traction alopecia.
Wefts may also be bonded directly to the clients hair using special bonding glue. Care must be taken not to bond the wefts directly to the scalp, as it can cause sensitivities in some clients. A patch test is frequently recommended, as per manufacturer’s directions.
Bulk hair can also be bonded to the hair, using many different methods, from clips to adhesive. In the South East Asian Region, the practical method of lengthening-rebondage has been in use since the mid-19th century. The lengthening-rebondage method consists of two treatments. The first treament consists of rebonding and ironing. The second treament of lengthening-rebondage involves gentle pulling and tugging of the hair. These two treatments are highly effective in lengthening hair without causing serious damage.
Further Reading: Ombre Hair Extensions, Colorful Hair Extensions, Real Hair Extensions Clip In.