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HYGIENE


No more skin dryness after cleansing


Volker Rosenberger, Riccardo Sfriso, Guillaume Laurent, Silke Adamietz – DSM, Switzerland


ABSTRACT As the responses to one of our recent global consumer surveys made clear, there is still a need for effective skin cleansers that also provide instant and long-lasting moisturisation after use. To address this unmet need, DSM has carried out some new studies with its hero ingredient Pentavitin®, a 100% natural, sustainably produced, moisturiser renowned for its moisture- magnet properties. Our findings from these studies show that common skin cleansing formulations containing Pentavitin immediately increase skin hydration for 24 hours, meaning an end to skin dryness post-cleansing or showering. We also found that even with frequent showering, Pentavitin helps reinforce the skin’s barrier while protecting against dryness.


* p < 0.1 ** p < 0.01 *** p < 0.001


Figure 1: Evaluation of skin hydration after 7 days with shower gel (soap-free, pH 5) formulations. D0


110% 105% 100% 95% 90% 85% 80% 75% 70%


D0t1h D0t24h D7 www.personalcaremagazine.com


Dry skin, as a result of washing and cleansing is one of the most significant unmet consumer needs today. Around the globe, the preference for different types of cleansing product – bar soap, shower gel or body wash – may vary from region to region,1


but wherever people are in the


world, our research shows that the concerns are the same. Sensations of “pulling”, itchiness, dry feeling skin, and stinging after showering and facial cleansing are all common complaints.2 The ‘Wash, Rinse, Repeat’ routine, which


has become the norm for so many people in the wake of the COVID-19 global pandemic, has magnified dry skin concerns further. Because while frequent washing is essential in helping to control the spread of infections, it can also impair skin barrier function, resulting in dry, cracked and sore skin. According to Google Trends, in March 2020, there was a 5000% increase in Internet searches relating to “dry, cracked hands”, “red and dry hands” and “dry hands from over washing”.3


More than ever, consumers are looking for effective skin


Shower gel 0.2% PENTAVITIN® Shower gel 0.5% PENTAVITIN®


* * ** * *


Shower gel placebo ■ ■ ■


cleansers that can also deliver instant and long-lasting moisturisation after use. However, they currently cannot find such products on the market so there is a clear opportunity here for the personal care industry. A recent Mintel report reveals that when it comes to shower products, women especially are more likely to prioritise additional care benefits over functional benefits only. Indeed, at least 59% of people in China who buy shower gel (the most used cleansing product type in this country) would be willing to pay more for products that smooth and hydrate the skin. Reflecting a broader global interest in sustainable and environmentally-friendly products, 90% of these consumers also said they would prioritise natural ingredients.1


About NMF – the key to sustaining skin hydration The balance of moisture in the skin is carefully regulated by the epidermis – notably by the stratum corneum, its upper-most layer. One of the key factors that influences the stratum corneum’s ability to absorb water and maintain hydration is skin’s natural moisturising factor, or NMF. Natural moisturising factor is a highly effective humectant, but it is greatly reduced by frequent daily washing. And without sufficient NMF the skin is prone to developing typical signs of dryness such as rough and flaky skin, stinging, or itchiness, tightness and redness. To boost skin hydration and address dry skin


issues, DSM developed a unique skin identical carbohydrate complex, similar in composition to the endogenous carbohydrate complex in NMF. Pentavitin® (INCI: Saccharide Isomerate) mimics the skin’s natural ability to lock in moisture by binding to it like a magnet and boosting filaggrin4


(an essential building block in the skin *** **


barrier). Additionally, it is 100% natural and has one of lowest carbon footprints in the industry for a moisturising agent. Our ingredient’s hydration boosting benefits are already proven to last for 72 hours after use in leave-on applications.4


So in view of a clear demand for


cleansing products that also moisturise, we recently carried out new studies to look at its performance in rinse-off applications.


Study 1: Hydration and skin barrier boost for Caucasian skin in a shower gel formulation Study design Our first new clinical study investigated the skin


July 2021 PERSONAL CARE


55


DRY Conductance (% of baseline)


HYDRATED


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