How long will last a full set ?
When is applied properly the eyelash extension will last as long as the natural growth cycle for your eyelashes (between 60-90 days )
Will the application be harmful to my natural lashes ?
Not at all they are applied on your natural lashes without touching the skin .
Can i apply mascara ?
Yes, even though mascara is not really required and I don't recommend it since the lash extensions already give the illusion of wearing mascara .It must be only a water-based mascara .