Development of sensory methods for skin diagnosis

ANALISIS SENSORIAL

PIEL

DIAGNOSTICO

BIBLIOGRAFIA NACIONAL QUIMICA

2007

Adequate methods for skin diagnosis are necessary to determine the characteristics state of the skin of cosmetic users in order to properly formulate cosmetics products, and could provide a useful tool for supporting cosmetics efficacy claims. In the present work sensory methods of clinical evaluation and selfevaluation were developed for the diagnosis of the state of the facial skin of fifty nine volunteers. A Cosmetologist observed the facial skin of the volunteers and scored six attributes using a structured 9-point quality scale. Besides, volunteers were asked to evaluate the state of their facial skin by scoring the same attributes than the Cosmetologist, using the same quality scale. Both clinical evaluation and selfevaluation methods provided a simple an efficient tool to characterize the state of the volunteers’ skin. Clinical evaluation provided information regarding the objective state of the skin, whereas selfevaluation provided a measure of the perception that each volunteer has of her skin. Cluster analysis allowed the identification of groups of volunteers with similar state of their skin, according to clinical evaluation and selfevaluation. Considering clinical evaluation data, two groups of volunteers were identified, which differed in the type and frequency of the skin care treatment they used. Volunteers that frequently used antiaging and moisturizing products showed higher clinical evaluation scores, showing the positive effect of cosmetic treatments on the state of the skin. Regarding selfevaluation, three clusters were identified, that mainly differed in their age. Older volunteers tended to be stricter with themselves and gave lower scores to the state of their skin than younger volunteers, probably due to different expectations. Although clinical evaluation and selfevaluation data were not correlated, they provided complementary information.

Journal of Applied Cosmetology v.25, no. 2, 2007. -- p.39-58

International Ediemme

2007

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DOI:10.1080/10242420701510684