L'Oreal Paris Youth Code Dark Spot Corrector Serum Concentrate, Youth code and trade; dark spot correcting and illuminating serum is an anti-aging serum that helps reveal skin that is vibrant and has a youthful look. This youth code facial treatment helps fade the appearance of dark spots, age spots, and sunspots. This dark spot correcting illuminating serum helps encourage a more luminous appearance and is designed to work for a wide spectrum of skin types and tones. Help encourage luminous, youthful-looking skin with youth code trade; dark spot correcting and illuminating serum.