Lash extensions are applied in 2 ways: Classic meaning a 1:1 lash ratio (1 lash extension per 1 natural lash) or; Volume meaning 2 or more:1 lash ratio (2+ lash extensions in a handmade fan per 1 natural lash.) Each individual lash extension or fan is placed carefully on 1 isolated natural lash keeping your lashes intact and able to continue to grow at their natural pace safely without damage. Applied correctly, lash extensions can be safe and will not damage your natural lashes.