Which instrument is primarily used to apply soft wax?

The wooden spatula is primarily used to apply soft wax because of its ideal properties for this task. It offers several advantages that make it the preferred choice in waxing procedures. The wooden spatula is lightweight, easy to handle, and provides a firm grip, allowing for better control during the application process. Its flat surface allows the technician to spread the wax evenly onto the skin, ensuring a thin layer is applied for optimal results.

Additionally, wooden spatulas are disposable, which enhances hygiene by preventing cross-contamination between clients. This is particularly important in aesthetic practices where sanitation is crucial for client safety. The use of a wooden spatula helps in achieving a smooth and even application, which contributes to effective hair removal during the waxing process.

While the other options may have their own uses in different contexts, they are not specifically designed for the application of soft wax in the same effective and hygienic manner as the wooden spatula.