The inhibitory effect on ultraviolet-induced skin damage by long-term use of test food.

INTERVENTION: Ingestion of test food (tablets that contain phycocyanin) for 9 weeks Ingestion of placebo (tablets that don't contain phycocyanin) for 9 weeks CONDITION: Healthy adults PRIMARY OUTCOME: Minimal erythema dose (MED) Evaluate before and 8 weeks after intake. SECONDARY OUTCOME: Skin color (L*, a*, b*); Evaluate before, 8 weeks and 9 weeks after intake. photography of irradiated area; Evaluate before, 8 weeks and 9 weeks after intake. blood pentosidine; Evaluate before and 9 weeks after intake. INCLUSION CRITERIA: