What is the role of a swatch/formula card in a color service?

• A. It lists client favorite colors
• B. It records payment details
• C. It describes the salon's policies
• D. It records the exact formula, placement, and timing for repeatability and reference in future services

Answer: (D)

Swatch/formula cards are the record-keeping tool you use during a color service to capture everything you need to reproduce the result later. They document the exact mix (shade or formula, developer strength, and mixing ratios), where the color is applied on the hair (placement and sectioning), and how long it processes. With these details in hand, you can recreate the same shade and placement in a future visit, ensuring repeatability and consistency for the client. The card also helps other team members follow the same plan if someone else works on the client, and you can adjust the formula if the hair’s starting level or porosity has changed since the last service. It isn’t about client favorites, payments, or salon policies—the card’s purpose is to record the precise color setup for accurate, dependable results.