4K Plus 5X Whitening Serum uses an innovative blend of ingredients to brighten and even out your skin tone. Niacinamide, also known as vitamin B3, helps reduce the appearance of dark spots and uneven skin tone. Pentapeptide-34 is a peptide that helps stimulate collagen production, resulting in firmer, more youthful-looking skin. Hyaluronic acid hydrates and plumps the skin, while licorice root extract soothes and calms the skin. Apply 4K Plus 5X Whitening Serum to clean, dry skin morning and evening for best results.