Which of the following is used to remove bonded wefts from the hair?

Using oil to remove bonded wefts from the hair is effective due to its ability to break down the adhesive used in the bonding process. Oil penetrates the bond, softening it and making it easier to remove the wefts without causing excessive damage to the natural hair. This method is generally gentle on the hair and helps prevent breakage compared to harsher solvents.

In contrast, water might not effectively dissolve the adhesive and could potentially cause more issues in terms of tangling or dislodging wefts inappropriately. Alcohol, although it can sometimes remove adhesive, is often too harsh and can lead to dehydration of both the hair and scalp, resulting in damage. Shampoo is not designed for removing bonded adhesive and may not be effective in loosening the bonds either. Thus, using oil is the preferred and safest method for this purpose.