The Effect of 12-Week Dietary Intake of Lutein on Minimal Erythema Dose and Other Skin Parameters

Inclusion criteria

• Caucasian female volunteers aged between 25 and 55 years at the time of the signature of Informed consent form (ICF),
• Signed Informed consent form (ICF),
• Fitzpatrick skin phototypes II and III,
• No skin pigmentation disorders,
• In good health condition,
• Willingness to avoid a consumption of any food supplements containing carotenes or other antioxidants during the study,
• Willingness to avoid the sun, tanning beds and tanning products on the gluteal area during the study,
• Willingness to follow all study procedures and keeping a diary for during the study (to follow their compliance and palatability),
• No changes in dietary habits or dietary supplements in last month prior to inclusion.
• No changes in cosmetic facial and body care routine in last month prior to inclusion on measurement areas.

Exclusion criteria

• Pregnancy or breastfeeding,
• Known or suspected allergy to any ingredient of the tested products or UV radiation,
• Changes in dietary habits and dietary supplementation in last month prior to inclusion,
• Veganism,
• Changes in cosmetic facial and body care routine in last month prior to inclusion.
• Diagnosed and uncontrolled/untreated/unregulated disease,
• Any clinically significant history of serious metabolic disease, digestive tract disease, liver disease, kidney disease, haematological disease.
• Acute skin diseases,
• Regular consumption of food supplements containing carotenoids or other antioxidants in last month before inclusion into the study.
• Invasive rejuvenation treatments (e.g. needle rollers, needle mesotherapy, deep/medium-deep chemical peels etc.) in last 6 months prior to study entry,
• Non-invasive rejuvenation treatments (e.g. radiofrequency, electrotherapy, ultrasound therapy) in last 2 months prior to study entry,
• Gluteal hyperpigmentation,
• Mental incapacity that precludes adequate understanding or cooperation