Eyes - cils booster lash revitalizing serum branded Lancome available in 4 ML variants. One of the most popular items in the Eyes category: buy it now and receive it in 48 hours. Repairing treatment for eyelashes. Cils Booster Lash Revitalizing Serum is a real treatment that takes care of your eyelashes, fortifying and strengthening them. Lancôme eyelash serum is a formula tested under ophthalmological control and also suitable for sensitive eyes. Repairs even the most damaged lashes.