title: Caucasian facial L* shifts may communicate anti-ageing efficacy.
abstract: An ageing study was conducted to capture skin colour parameters in the CIELab system from Caucasians of both genders and all available adult ages. This study produced a linear correlation between L* and age for a Caucasian population between 20 and 59 years of age as follows: (L* value) = -0.13 × (Age in years) + 63.01. Previous studies have addressed age-related changes in skin colour. This work presents a novel consumer correlated quantitative linear model of skin brightness by which to communicate age-related changes. Two product assessment studies are also presented here, demonstrating the ability of anti-ageing products to deliver on objective and subjective improvements in skin brightness. It was determined to be possible to use the fundamental Caucasian L*-age correlation to describe product benefits in a novel quantitative and consumer-relevant fashion, through the depiction of a 'years back' calculation.
authors.affiliation: Johnson & Johnson Consumer Products Company, 199 Grandview Road, Skillman, NJ 08558, USA. tzedayko@its.jnj.com
authors.forename: T
authors.initials: T
authors.lastname: Zedayko
authors.forename: M
authors.initials: M
authors.lastname: Azriel
authors.forename: N
authors.initials: N
authors.lastname: Kollias
mesh_terms: D000328:Adult; D000368:Aged; D005145:Face; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015595:Skin Aging / Q000208:ethnology*; D044465:White People