xanthophylls is a family of biochemicals that are oxygenated derivatives of caratenoids. They can be used as colorants (red to yellow) and for apparent anti-oxidant and anti-free radical properties. Some studies now indicate uV protection capacities as well. Astaxanthin, lutein, and zeaxanthin are examples of xanthophylls. Both lutein and zeaxanthan appear to limit uV-induced skin damage.
