Novalash eyelash extensions are individually attached to give the most natural flawless look. Using 3 different lengths and picking the correct thickness is very important to maintain continuous healthy lash growth. Bella's lash team does our best to educate you on maintenance plans providing tips to help your lashes last the longest, typically 3-4 weeks is the norm. We are gentle and it is painless you will most probably take a nap and wake up to luscious lashes! Say goodbye to mascara... you can save your time to spend with your loved ones! Novalash is proud to offer the only Osha certified safe adhesive, the only company to offer a material safety data sheet with a complete list of ingredients. They also have a sensitive formula for contact users and people with allergies. Lashes are synthetic so no animal was harmed in the process of making you gorgeous. Please feel free to call us to answer any of your questions.