Final answer:
To complete the instruction, the phrase should be 'Always condition the hair after the recommended rinsing time.' Conditioner helps to restore moisture, protect, and maintain the health of the hair after it has been shampooed or treated.
Step-by-step explanation:
The student's question, Always ______________ the hair after the recommended rinsing time, suggests the correct phrase to complete this instruction is likely condition. When caring for hair, especially after coloring or treating it, it is often recommended to use conditioner to help restore moisture and protect the hair. Using conditioner helps in detangling, smoothing the hair's cuticle, and maintaining the overall health of the hair.
After rinsing out hair treatment products or shampoo, the next step is generally to apply conditioner. Conditioning the hair should be done evenly, focusing particularly on the ends of the hair which are more prone to damage. Leave the conditioner in for the amount of time specified on the product's instructions before rinsing it out with cool or lukewarm water, which can help seal the hair's cuticle and lock in moisture.