Panthenol is a form of Vitamin B5. It is small enough to penetrate through the cuticle of hair, and is a highly hygroscopic (water-attracting) chemical, acting as a humectant, attracting water to itself. It also soothes irritated skin and helps hair retain moisture in the cortex and on the surface, leaving it more pliable, shinier and slightly thicker.
Panthenol: What Is It?
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