The Cils Booster Lash Activating Serum by Lancôme nourishes and revitalizes the lashes intensively from the root to the tips. Similar to over-processed hair, fine lashes are prone to damage and therefore need a revitalizing care to gain density and length. The lash serum repairs the hair fibers within four weeks and improves lash density with regular use. Overworked and damaged lashes are effectively nurtured. Additionally, the lash serum acts preventively against falling lashes. For fuller, longer, and stronger-looking lashes.