TDLR Eyelash Extension - Written Board Exam Questions and Answers | Latest Version | 2025/2026 | Correct & Verified

TDLR Eyelash Extension - Written Board Exam Questions and Answers | Latest Version | 2025/2026 | Correct & Verified What is the main purpose of a patch test before eyelash extensions? To check for allergic reactions How long should natural lashes be cleansed before applying extensions? Until all oil, makeup, and debris are removed What type of adhesive is used for eyelash extensions? Medical-grade cyanoacrylate adhesive Why must hands be washed before every service? To prevent cross-contamination and infection What is isolation in eyelash extension application? Separating one natural lash before attaching an extension Why should extensions never touch the eyelid? To avoid irritation and injury 2 What is the ideal humidity range for lash adhesive to cure properly? Between 40% and 60% Why should eye pads be placed under the eyes during service? To protect the skin and isolate lower lashes What tool is used to separate natural lashes? Isolation tweezers What is the correct distance to place an extension from the eyelid? About 1–2 millimeters Why is proper ventilation important in a lash room? To reduce inhalation of adhesive fumes What should be done if adhesive gets into a client’s eye? Flush the eye with clean water immediately What is a classic eyelash extension set? One extension applied to one natural lash Why should lashes be brushed during application? 3 To prevent tangling and ensure even placement What is the main cause of poor lash retention? Oil, moisture, or improper attachment Why must tools be disinfected after every client? To prevent the spread of bacteria What should a client avoid for 24 hours after service? Water, steam, and heavy sweating What is lash mapping? Planning lash lengths and styles for each eye Why should extensions not be heavier than the natural lash? To prevent lash damage and fallout What is the purpose of a primer before application? To remove oils and improve adhesive bonding What should be done if a client feels burning