In this study we investigated the correlation between the basal skin hydration data, elasticity and surface roughness and the age of volunteers. Then, we analyzed the variations obtained at the end of the treatments with anti-age cosmetic products for the face. The aim was to investigate the susceptibility to improvement of volunteers from different age groups. Data were collected in our testing laboratory based in Milan over a 6-year long activity. We only considered measurements performed on the face of a female population aged between 18 and 70 years of age. Values were subdivided in age groups for each considered parameter and were statistically compared. As expected, skin roughness increased and R2 elasticity parameter decreased with ageing, while hydration values resulted to be higher in older women. Apparently, this unaccountable result is probably due to the fact that elderly women living in urban areas tend to take appropriate care of their skin, thus improving skin hydration effectively. Interestingly, as for skin hydration, the analysis showed that women aged 61–70 were the most susceptible to improvement induced by several types of cosmetic treatments. However, when considering the skin roughness values, women over 50 years old seemed to react better to cosmetic treatment. As for skin elasticity, the highest improvement values were found with women between 31 and 50 years of age.

In this study, the values of some scalp basal parameters, collected during several clinical studies involving a total of 254 subjects with androgenic alopecia, were analyzed. Subjects’ values were grouped by age and gender, and the differences between groups were examined. The density values (n° of hair/cm²) and the percentages of anagen and telogen hair were considered. Furthermore, the variations recorded at the end of cosmetic treatments (ranging from 12 to 16 weeks) aiming to reduce excessive hair loss were analyzed. The basal values regarding the percentage of hair in the anagen phase evidenced a linear decrease with increasing age, with a corresponding increase of the percentage of hair in the telogen phase. As far as the hair density differences between males and females are concerned, females had a mean value significantly higher than males. Moreover, at the end of the intended anti-hair loss treatments, females were more susceptible to improvements of their hair density values.