Final answer:
Clients should return to the salon for the removal of bonded wefts when their natural hair has grown no longer than 6 inches (15 cm) a year or half an inch (1.25 cm) each month.
Step-by-step explanation:
Clients should return to the salon for the removal of bonded wefts when their natural hair has grown no longer than 6 inches (15 cm) a year or half an inch (1.25 cm) each month.
This is because hair grows at an average rate of half an inch per month, which means that after 6 months, the natural hair would have grown about 3 inches.
Therefore, it is recommended for clients to return to the salon for bonded weft removal within 6 months to prevent any damage to their natural hair and to ensure proper maintenance.