GUERLAIN L'Essentiel Foundation Brush by Mathieu Lehanneur has an ergonomic design for an intuitive application technique that naturally enhances the foundation make-up result. This pleasant ritual is gentle on the skin. Foundation is easy to apply with precision, even to difficult areas such as the eye contour. The result is even without any streaks or demarcation lines for a natural make-up finish with a “bare-skin” effect. Its retractable sleeve protects the soft, synthetic fibres. The brush remains clean and fresh use after use. It is easy to clean and does not lose its fibres. Women who have been surveyed say that: - It is easy to quickly apply the foundation with precision. - The brush makes it possible to apply the foundation evenly, without any streaks or demarcation lines. - The make-up result is natural with a “bare-skin” effect. - The brush is easy to clean and does not lose its fibres. *Test on 33 women aged between 18 and 68 (mean age: 39) once a day for seven consecutive days with their usual foundation.