The Spectral Fluid Foundation Refill by Serge Lutens provides an undetectable finish on the skin, offering a barely-there texture. The formula helps to unify skin tone, minimising the appearance of blemishes and imperfections. The ultra-lightweight formula provides high coverage with a high-definition velvety matte finish. The foundation offers up to 16 hours of wear, maintaining a flawless appearance all day long. Suitable for all skin types, the foundation ensures comfortable wear and can be built up as desired. This product is a refill.