Final answer:
Before a relaxer service, the scalp must be inspected for abrasions, irritations, or other conditions to ensure it is safe to proceed with the chemical service.
Step-by-step explanation:
Before a relaxer service, it is crucial to check the scalp for any signs of abrasions, irritation, or other scalp conditions. The presence of these issues could indicate that it is not safe to proceed with the chemical service because relaxers can cause severe irritation or burns on an injured or sensitive scalp. To perform this pre-service check, one should part the hair in small sections and visually inspect the scalp for any redness, swelling, cuts, sores, or signs of infection. Additionally, one can perform a gentle palpation of the scalp to feel for any abnormalities that might not be immediately visible.