Developed in the lab and tested by women. The clinically proven Lash Serum from L’Oréal Paris delivers fuller, stronger, and longer-looking lashes. This ophthalmologist-tested serum, enriched with hyaluronic acid, amino acids, and castor oil, provides intensive care for the lashes. The lash line appears denser and more voluminous. The texture is pleasantly odorless and color-neutral, and it does not stick. With the brush applicator, the serum can be precisely applied to the entire lash line, from the base to the tips. Testers have confirmed: the lashes look stronger and the lash line appears fuller. When used twice a day, initial results are visible after just four weeks.