In their recent paper on Evolutionary Psychology of Physical Attraction and the Role of Skin Condition in Perception of Beauty published by the IFSCC magazine, the authors have quantified the visible difference in perception of skin colour and surface topography: In the forehead and the peri-orbital area, the study participants were able to detect as low as a 20% change in skin surface topography. In terms of skin colour distribution, a smoothing of inhomogeneity as low as 25% has a significant effect on facial heath perception. Visible signs of facial ageing impact on how attractive we appear to others. Since 2007, Procter & Gamble have invested into facial attractiveness research that demonstrates that uneven skin coloration - as well as lines and wrinkles - matter in our perception of our facial age and attractiveness! Whilst lines & wrinkles code for age, colour relates to perceived health of the individual. Whilst uneven coloration matters, forehead lines and wrinkles are the top concern of my clients. Managing their expectations in terms of discernible results deliverable by their skincare routine is essential. The research paper by Samson et al  relates to their age group, ethnicity [and severity scale of the concerns] : Perception and noticeability of skin surface topography was studied by computer manipulation of six facial images of British women, aged 45–65 years. All
My recent column in Cosmetics & Toiletries looks into skin diagnostics and the way we judge the efficacy of our skincare products at home. Living in the digital world of self-scrutiny - and “on-display” - through social media further fuels consumers’ expectations. Smart beauty devices are becoming reality as the “quantified-self trend” grows with the number of sensors available to monitor our body vital signs. Are you using any of the at-home diagnostic devices or online apps that can assess your skin status and/or track the progression of your skin concerns over time?