Extend the life of Single-Layer™ eyelash extensions! This innovative formula coats and seals the attachment area between the eyelash extension and the natural eyelash, creating a protective barrier against water, humidity, tears, oils, perspiration, makeup, dust, and debris. Style, shape, and hold curl while adding a subtle sheen in just one step. Do not apply this product 48 hours before or after an eyelash extension application. Recommended use of this eyelash extension Protective Coating is 1-2 times per week. Increase application to 3 times per week if you participate in activities that involve excess perspiration, steam, or water.