Flament F, et al. - This study aspired to record the possible changes in 14 facial signs induced, in a 6-month period, by the periodical shift from winter to summer in Caucasian women residing in Paris, via standardized pictures. Furthermore, it weighed the preventive effects of a strong photo-protective product, daily applied to their face by an additional group of women of same age-range and presenting same severities of facial signs in winter. The alterations in some facial signs occurring were affirmed in Caucasian women. It was mostly associated with the structural (wrinkles) and vascular elements. Such variations were possibly alleviated or prevented by daily applications of a strong sun photo-protective product.