Guerlain Mad Eyes Mascara Buildable Volume Lash By Lash offers lash-by-lash buildable volume: +112%* volume in an instant. Lashes are thicker, longer and with more curl for 24 hours**. The soft fibre brush is calibrated to increase the density of each lash after every stroke, for spectacular volume and 24-hour**, water-resistant wear. The products unique formula infuses the lashes with skincare properties for ever-more beautiful lashes application after application. After four weeks of use, even without makeup, lash fibres are longer, thicker and with boosted curl. Its formula is resistant to tears and humidity.