!Why Do Some Skincare Products Sting on Sensitive Skin? - SUSHENAH scientific illustration When skincare products sting, your barrier is compromised—and irritants are getting in where they shouldn't. According to dermatological research in Andrews' Diseases of the Skin, the stratum corneum exists to "prevent water loss and invasion by foreign substances." When this layer is damaged, it can no longer do its job. Read that again. The stinging isn't the product "working." It's your skin telling you the wall has gaps. This isn't sensitive skin as a personality trait. It's barrier dysfunction letting irritants reach nerve endings that should be protected. The solution isn't avoiding products. It's rebuilding the barrier so your skin can tolerate what it should. We know this feels overwhelming. But once you know the cause, the path becomes clear. Learn about barrier repair as the first step for reactive skin.
