In what situation would a client be advised against getting extensions?

A client should be advised against getting extensions if they have a scalp condition or damage to their natural hair because such conditions can be exacerbated by the application of extensions. Extensions require a secure attachment to the natural hair, which can put additional stress on already compromised hair and scalp. If the client is experiencing issues like inflammation, infection, or significant hair breakage, placing extensions can lead to further harm, including worsening the condition or causing pain. It is essential for the health of the client's hair and scalp that these issues are addressed before considering adding extensions, ensuring that the natural hair can withstand the additional weight and styling associated with extensions.