Salicyloyl Phytosphingosine encourages the stimulation of the skin’s own production of collagen and other ECM proteins, thereby improving the appearance of the skin, according to the manufacturer’s studies. It is the salicylic acid derivate of native occurring phytosphingosine in human skin which has anti-inflammatory properties and skin conditioning benefits. Published studies have shown that when it’s “topically applied to the face, reduces the depth of wrinkles and improves skin texture in photoaged skin.”

https://www.cosmeticsdesign.com/Article/2007/07/23/New-ingredient-for-the-repair-of-photoaged-skin