The Gundry MD Polyphenol Dark Spot Diminisher Serum is a 1 fl oz dark spot corrector specially formulated for all skin types. Made in the United States, this serum is designed to diminish dark spots and improve skin health. With a shelf life of 12 months, this product comes in a lot of 4 brand new sealed boxes, ensuring you have an ample supply to achieve desired results. Perfect for anti-aging skincare routines, this serum is a reliable choice for addressing dark spots and promoting a clearer complexion.