Soothing Effect of a Cosmetic Product on Skin Discomforts Induced by a Chemical Irritant (Capsaicin) and UV-Radiation, and after Mosquito Bites and Sunburn in a Real-World Setting

Abstract

Irritated and itchy skin is a common skin condition. Consumers tend to opt for natural ingredients for irritated skin (e.g., after insect bites or sun exposure). We tested a cosmetic product with 94% of its ingredients being of natural origin, each with its beneficial properties, e.g., nourishing shea butter, cooling menthol, and soothing bisabolol. Skin discomfort was induced either by a chemical irritant (capsaicin) or UV radiation by a solar simulator. In this clinical, prospective, and controlled experimental study, we investigated the soothing effect of the tested product. We observed a soothing effect on the capsaicin-induced itching and stinging sensation with a statistically significant decrease in the discomfort sensations one minute after a single application. The tested product also showed a significant reduction in the UV-induced skin erythema (UVA+B exposure). In a real-world study, these results can be correlated with a decrease of itching and irritation after sunburn or after insect bites.

Skin Anti-Aging Efficacy of a Lactobacillus plantarum GT-17F Fermented Dendrobium officinale Ingredient: A Randomized, Double-Blind, Placebo-Controlled Clinical Study

“…For a precise erythema measurement, the Mexameter ® MX 18 (Courage+Khazaka electronic GmbH, Cologne, Germany) probe was employed [30]. This probe emits light at three distinct wavelengths.…”