What do eyelash extensions include in their services?

Eyelash extension services primarily consist of the application, removal, and trimming of fibers. This process involves attaching synthetic or natural fibers to the client's existing eyelashes to enhance their length and volume. Application refers to the careful placement of these fibers using a special adhesive, ensuring that they adhere properly while allowing for natural lash growth.

Removal is also a critical aspect of eyelash extension services, as it must be executed safely without damaging the natural lashes. Additionally, trimming might be required to ensure that the extensions blend well with the natural lashes and achieve the desired look.

The other options do not accurately describe what eyelash extension services encompass. Cleansing of the lashes is usually part of the preparation for extensions but does not define the service itself. Application of color agents refers to dyeing or tinting eyelashes, which is a separate service. Permanent wave solutions are not related at all to eyelash extensions, as they pertain more to techniques used for curling hair. Thus, the third option accurately captures the primary components of eyelash extension services.