A noticeably brighter, more even complexion in just 3 days and helps decrease the look of dullness in skin after 4 weeks**Based on a 4-week clinical study on 30 Asian women, ages 24-49, with facial pigmentation.Skin is 78.5% more hydrated immediately after use**** Based on a 5-week clinical study of 30 Asian women, ages 20 to 49, measuring hydration on forearm.90% of people agreed the product gently absorbed without irritation††Based on the self-assessment portion of a 5-week clinical study of 30 Asian women ages 24 to 49, after 1 day.