title: Instrumental and clinical studies of the facial skin tone and pigmentation of Shanghaiese women. Changes induced by age and a cosmetic whitening product.
abstract: The pigmentation patterns of facial skin of 354 healthy Chinese women aged 18-80 years were investigated clinically and instrumentally. Chromasphere(®) was used to acquire pictures from the cheeks of subjects. Facial skin tone was described by L* parameter from the L,a,b system as well as Individual Typology Angle (ITA). Results show that skin tone becomes significantly darker along the life span. Both size of hyper-pigmented spots and their contrast with surrounding skin were found increased with age. As additional study, 40 women from these 354 subjects were asked to apply daily a whitening cosmetic product for a 2-month period. Such application led to a significantly lighter skin tone, although this study was not vehicle controlled and we cannot exclude that the increase in L* observed was in some part because of cumulative effects of previously used whitening products, there was an association with lighter skin tone as assessed through both instrumental measurements and self-perception by most subjects.
authors.affiliation: L'Oréal and Innovation Shanghai, Shanghai, China. cqiu@rd.loreal.com
authors.forename: Q
authors.initials: Q
authors.lastname: Huixia
authors.forename: L
authors.initials: L
authors.lastname: Xiaohui
authors.forename: Y
authors.initials: Y
authors.lastname: Chengda
authors.forename: Z
authors.initials: Z
authors.lastname: Yanlu
authors.forename: J
authors.initials: J
authors.lastname: Senee
authors.forename: A
authors.initials: A
authors.lastname: Laurent
authors.forename: R
authors.initials: R
authors.lastname: Bazin
authors.forename: F
authors.initials: F
authors.lastname: Flament
authors.forename: A
authors.initials: A
authors.lastname: Adam
authors.forename: B
authors.initials: B
authors.lastname: Piot
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002681:China; D015331:Cohort Studies; D003358:Cosmetics / Q000494:pharmacology*; D004817:Epidermis / Q000187:drug effects* / Q000502:physiology; D005145:Face / Q000502:physiology*; D005260:Female; D006801:Humans; D008875:Middle Aged; D010858:Pigmentation / Q000187:drug effects* / Q000502:physiology; D015595:Skin Aging / Q000187:drug effects* / Q000502:physiology*; D055815:Young Adult
chemical_list: D003358:Cosmetics