What is Panthenol?
Chemically, Panthenol is a humectant that draws water into the skin. Provitamin B5, a soothing humectant rated 0/5 and safe across skin types.
You may see it on labels as Panthenol, Provitamin B5, D-Panthenol, so it can hide under more than one name in an ingredient list.
Where Panthenol shows up
Panthenol is commonly formulated into serums, toners, and moisturisers of every kind. Separately from clogging, its irritancy is rated 0/5 — low, so it's unlikely to sting or sensitise on its own.
Is Panthenol bad for acne-prone skin?
Because it barely registers on the comedogenic scale, Panthenol is generally a safe pick for breakout-prone skin and is often recommended as a gentler alternative to heavier ingredients.