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Daily Consumption of a Fruit and Vegetable Smoothie Alters Facial Skin Color

Fig 1

Study design and participant attrition.

Considering total carotenoid and calorie intake in baseline diet, participants were assigned into intervention or control group by block randomization. Participants received either a smoothie or water every weekday for 6 weeks, and skin color was measured at baseline and in weeks 5, 7 and 9. 80.5% of the participants in the smoothie group and 85% of the participants in the control group completed the intervention.

Fig 1

doi: https://doi.org/10.1371/journal.pone.0133445.g001