Clients often worry about how their skin will react to treatments, especially if they have sensitive skin or a history of allergies. It’s important to address these concerns by conducting a thorough skin assessment and performing a patch test when necessary. Discussing any known allergies with the client before treatment and ensuring that hypoallergenic products are available can help alleviate concerns. Providing clear information on how to manage any potential reactions post-treatment can also reassure clients and build their confidence.