Identification of a possible susceptibility locus for UVB-induced skin tanning phenotype in Korean females using genomewide association study.

A two-stage genomewide association (GWA) analysis was conducted to investigate the genetic factors influencing ultraviolet (UV)-induced skin pigmentation in Korean females after UV exposure. Previously, a GWA study evaluating ~500 000 single nucleotide polymorphisms (SNPs) in 99 Korean females identified eight SNPs that were highly associated with tanning ability. To confirm these associations, we genotyped the SNPs in an independent replication study (112 Korean females).

A study correlating between instrumental and consumers' subjective luster values in oriental hair tresses.

Hair luster has long been a key objective for consumers in the hair care market and many researchers have sought to quantitate the luster of hair fibers or tresses. Recently, a fast polarimetric video camera called SAMBA with a high polarization contrast was introduced that can effectively separate specular and diffuse light. Instrumental measurement of shine using SAMBA was conducted to quantitate the luster on phenyl trimethicone-treated hair tresses.

Improving lip wrinkles: lipstick-related image analysis.

Background/purpose: The appearance of lip wrinkles is problematic if it is adversely influenced by lipstick make-up causing incomplete color tone, spread phenomenon and pigment remnants. It is mandatory to develop an objective assessment method for lip wrinkle status by which the potential of wrinkle-improving products to lips can be screened. The present study is aimed at finding out the useful parameters from the image analysis of lip wrinkles that is affected by lipstick application.

The character of eyelashes and the choice of mascara in Korean women.

Background/aims: Skin care products based on the skin type and sensitivity have been successfully appealed in cosmetics market, but there has been few researches related with the character of customer in the field of make-up product including mascara. The aim of this study is to analyse and classify the eyelashes of Korean women objectively and to find out the relationship between individual eyelash character and expecting mascara-effect.

Methods: For 50 Korean women in their twenties to thirties, 12 parameters related to shape of eyelashes were investigated using image analysis system with digital camera.