New in box. Full size 1 oz. Bottle is purple. Serum is a purple brown color. From Sunday Riley: An advanced 10% Niacinamide serum to help minimize pores' appearance and help improve post-acne dark spots and surface redness while promoting an overall radiant complexion. Directions: Apply a few drops of B3 Nice to face, neck, and décolleté once or twice a day, after cleansing and prepping the skin. Smoke-free home.