Cosmetic or dermatologic composition against sensitive skin

Abstract

Use of a combination of (i) Lactobacillus paracasei and L. casei, or their fractions or metabolites, and (ii) Bifidobacterium longum or B. lactis, or their fractions or metabolites, to prepare a dermatological composition for treatment and / or prevention of reactive, sensitive skin, optionally where associated with dry skin, is new. An independent claim is also included for cosmetic and / or dermatological compositions containing (A) and (B). - ACTIVITY : Dermatological. A composition containing 1010> colony-forming units each of L. paracasei ST11 NCC 2461 (CNCM I-2116) and B.lactis NCC 2818 (CNCM I-3446) was administered orally, once a day for 8 weeks, to women with dry, sensitive skin. The mean reduction, relative to placebo controls, in clinical scores for roughness of facial skin was 79% and for dryness of the legs 60%, while the mean increase in hydration factor was 28%. - MECHANISM OF ACTION : The combination of (A) and (B) acts on the skin barrier and maintains natural defense mechanisms, to promote cutaneous homeostasis and regulation of the immune system of the skin.

Description

technical field [0001] The present invention mainly relates to the use of combinations of specific microorganisms for the preparation of compositions, especially cosmetic and / or dermatological compositions, more particularly compositions for the prevention and / or treatment of sensitive and / or dry skin. The invention also relates to corresponding compositions. Background technique [0002] Usually, sensitive skin is defined by the exceptional reactivity of the skin. However, unlike allergic skin, the reactivity is not caused by an immune reaction to the presence of an allergen, ie it does not only occur on the skin that has become sensitive. Its mechanism of action is called non-specific. [0003] The reactivity of the skin is usually manifested by the way the individual displays discomfort signals from contact with trigger elements which can be of various origins. [0004] Skin reactivity is usually manifested by the way an individual displays symptoms of discomfort to tr...

AI Technical Summary

Problems solved by technology

[0006] However, to date there is still no fully satisfactory solution to prevent and / or treat this type of sensitive skin, which is exacerbated when sensitive skin is associated with dry skin