What key factor should be assessed before applying eyelash extensions to a client?

Assessing the client’s lifestyle and maintenance willingness is crucial before applying eyelash extensions because it directly impacts the success and longevity of the extensions. Different lifestyles can affect how well the extensions hold up, as clients who regularly participate in activities such as swimming, heavy exercising, or exposure to steam may require specific types of extensions or adhesives that cater to their needs. Additionally, understanding a client's willingness to maintain the extensions is vital. Eyelash extensions require regular upkeep, such as fill appointments and careful aftercare practices. If a client is not ready or willing to commit to this maintenance, the extensions could become damaged or cause dissatisfaction, potentially leading to an unhappy client.

While the client's makeup style and favorite color can reflect personal preferences, they do not have a direct impact on the suitability or maintenance of eyelash extensions. Previous experiences with eyelashes might provide some insight into client preferences, but they do not encompass the broader considerations that relate to their lifestyle and ongoing commitment to care for the extensions effectively.