Final answer:
Applying protection cream to the entire hair is important during a permanent wave procedure to protect the hair strands from the chemicals used.
Step-by-step explanation:
When performing a permanent wave procedure, it is important to apply protection cream to 3) the entire hair.
Applying the protection cream to the entire hair helps protect the hair strands from the chemicals used in the permanent wave solution. This can help minimize damage and keep the hair healthy.
By applying the cream only to the roots or ends, the hair strands in the middle may not be adequately protected, leading to potential damage and uneven results.