Cosmetic benefits of mild cleansing syndet bars versus soap

        It has been well established that cleansing bars based on mild synthetic surfactants (syndets) are significantly milder to skin than the more widely used soap-based cleansing bars. Mild syndet cleansing bars have also been shown to be more compatible cleansers for patients with a variety of skin conditions (e.g., acne, rosacea, atopic dermatitis) and are recommended to be an integral part of patients' fundamental daily skin care regimen. We have recently investigated the cosmetic benefits of mild cleansing in a group of mild to moderate photodamaged women who typically wash their faces with ordinary soaps. In a 4-week, double-blind, split-face clinical trial, it was found that daily cleansing with a mild syndet bar led to significant improvements in the appearance of skin compared with daily cleansing with a regular soap. Several skin appearance attributes such as texture, clarity, tone, and brightness improved significantly over the 4-week trial period, as assessed by the investigating dermatologist. Subjects noticed a significant decrease in the appearance of fine lines/wrinkles that was verified by in vivo texture measurements. These benefits of mild syndet bars over soap are linked to the syndet bar's ability to maintain the integrity of the stratum corneum barrier and leave skin in a more hydrated state.
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