The Mary Kay LASH & BROW BUILDING SERUM is a clear, standard-sized formulation designed to promote healthy growth of lashes and brows. With a volume of 15 fl oz, this serum from the trusted brand Mary Kay is specifically formulated to nourish and strengthen lashes and brows, providing a potentially safer and more natural alternative to traditional mascara or brow treatments. Perfect for enhancing the appearance of lashes and brows while also promoting overall eye health, this new product is sure to be a favorite among makeup and beauty enthusiasts.