What tool is typically used to apply a paraffin mask?

The correct choice is a brush, which is commonly used to apply a paraffin mask due to its ability to provide an even and smooth application across the skin. Brushes are designed to hold the product well and facilitate an easy spread over areas requiring treatment, ensuring that the mask adheres evenly and fully covers the skin for optimal effects.

Using a brush also allows for precise control, particularly in sensitive areas, and can help in achieving a uniform layer that enhances the overall effectiveness of the paraffin treatment. This method can contribute to better absorption of the warm paraffin and help in retaining moisture, making it a preferred tool for estheticians when applying this type of mask. Other tools, while useful for different applications, do not provide the same level of efficiency or effectiveness in applying a paraffin mask.