Abstract
Many studies performed in the last decade have focused on the cutaneous microbiota. It has been shown that this microbiota plays a key role in skin homeostasis. Considered as “a second barrier” to the environment, it is very important to know how it reacts to exogenous aggressions. The cosmetics industry has a started to use this microbiota as a source of natural ingredients, particularly ones that confer photoprotection against ultraviolet (UV) rays. Interestingly, it has been demonstrated that bacterial molecules can block UV rays or reverse their harmful effects. Oral probiotics containing living microorganisms have also shown promising results in restoring skin homeostasis and reversing the negative effects of UV rays. Microbial-based active sunscreen compounds have huge potential for use as next-generation photoprotection products.
Highlights
The fields of cosmetics and dermatology have recently focused their studies on the cutaneous microbiota and its interaction with the skin and its environment.UV rays are one of the most concerning environmental factors affecting the skin
Formulations of cosmetic products containing probiotic and postbiotic ingredients are intended to block the effects of UV radiation effects and protect or restore the balance of the cutaneous microbiota due to their anti-oxidant and/or anti-inflammatory activities [1]
UV acts on another common skin bacterium, Micrococcus luteus. This strain has the remarkable property of being able to antagonize the deleterious effect of UV on the immune system through the reversion of cis-urocanic acid formed by UVs during skin exposure [47]. This has led the cosmetic industry to take into consideration the cutaneous microbiota in the development of products used for photoprotection
Summary
The fields of cosmetics and dermatology have recently focused their studies on the cutaneous microbiota and its interaction with the skin and its environment. Many studies have focused on the effects of UV rays on the skin, but few have investigated the cutaneous microbiota. The objective of this review is to consider and discuss the ability of cutaneous microorganisms to protect against damage caused by UV rays and their possible skin benefits. Formulations of cosmetic products containing probiotic and postbiotic ingredients are intended to block the effects of UV radiation effects and protect or restore the balance of the cutaneous microbiota due to their anti-oxidant and/or anti-inflammatory activities [1]. In this study we propose to identify protection strategies related to the cutaneous microbiota such as probiotics or postbiotics.
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