Treatment for eyelashes and eyebrows. Its natural origin elaboration and its bio-based formula is designed to respect the most delicate skins and thus offer a makeup suitable for sensitive skin and eyes. This serum contains an active ingredient that acts on the appearance of the eyelashes, contributing to the growth of eyelashes and eyebrows, in addition to cooperating in thickening and densifying them. Its formula has been tested under ophthalmological control on sensitive eyes and contact lens wearers.