Yes, you most definitely can wear makeup with your eyelash extensions. Mascara that is specifically designed for lash extensions is best and can be applied to the tips of the extensions. Do not use oil based or waterproof mascara as any type of oil based mascara can break down the glue bond and cause the extensions to come off sooner. Only use an oil free makeup remover. Eyeliner and eyeshadows can be applied as long as it is oil free and removed daily, but remember less is more when it comes to applying eyeliner with lash extensions. The more eyeliner means more potential build up on your lashes.