Obagi SPF tint is a lightly tinted sunscreen to protect your skin against UVA and UVB radiation. This sunscreen is designed to match your skins natural undertone and enhance your natural complexion. Choose the warm shade if you have yellowish, golden or olive undertones, a darker complexion that tans more easily. Use the cool shade if you have bluish, red or pink undertones, fair skin that sunburns more easily.