What are the two notices that must be posted in a salon when students work on the public?

The correct answer highlights important guidelines that must be communicated to the public when students are performing services in a salon setting. The first notice, stating that "All work done by students only," is crucial as it ensures that clients are aware that the services they are receiving are being conducted by students who may still be in training. This informs clients of the level of expertise they can expect and manages their expectations accordingly.

The second notice, indicating "Charges for reasonable cost of materials only," addresses the potential costs associated with the services provided. This notice makes it clear that clients will only be charged for the materials used during their service, which is particularly important in a training environment where students may not yet be fully qualified practitioners charging standard salon rates. By communicating this upfront, salons can foster trust and transparency with clients, ensuring an understanding of the pricing structure.

In contrast, other options do not provide the necessary information related to the nature of the services being performed or pricing adjustability for student work, which are essential for client awareness and satisfaction in a training salon context.