Panthenol, also known as Pro Vitamin B5, is a B vitamin that helps nourish the look of skin and hair. As a humectant, it is helpful in attracting and retaining moisture. It is commonly found in skin care and hair care products because of its ability to condition and improve shine.
Peter Thomas Roth products with panthenol:
Pre-Treatment Exfoliating Cleanser
Ultimate Solution 5 Multitasking Moisturizer