Panthenol (provitamin B5)

panthenol · pantenolo · provitamin B5 · dexpanthenol

A provitamin-B5 humectant used to soothe and support hydration and comfort.

TypeCosmetic (topical)

The grade answers: What does the human evidence support for: Soothing & hydration?

Grade

Limited

The grade rates evidence quality — it is not advice to take or buy.

Class: Skincare / topical
Primary use: Soothing & hydration
Evidence strength: low
Last reviewed: 2026-07-01

Bottom line

A gentle, well-tolerated soother and humectant with modest supporting evidence, most convincing for comfort and barrier recovery. Not an anti-aging active — a calming supporting player.

What the evidence says

Panthenol (converted in skin to pantothenic acid) is a long-standing humectant and soothing ingredient. Evidence — including for the dexpanthenol form in barrier-recovery contexts — supports improved hydration, reduced roughness and better comfort in dry or temporarily stressed skin, though many studies are small or product-specific. It is a cosmetic soothing/hydration claim, not treatment of any condition, and results depend on the whole formula. Grade C: reliably gentle and helpful for comfort, with a modest evidence base.

Key studies

[1]
Dexpanthenol and skin barrier recovery · RCT
Improved hydration and comfort in barrier-stressed skin.
Open on PubMed ↗
[2]
Panthenol in cosmetic formulations (review) · review
Supports its humectant/soothing role.
Open on PubMed ↗
[3]
Provitamin B5 and skin (review) · review
Background on the mechanism.
Open on PubMed ↗

See all studies on PubMed ↗

Scoped PubMed search, not a curated bibliography: the individual PMIDs for this entry have not yet been verified one by one. For that reason it is not used to support a high grade and is awaiting review.

Mechanism

Acts as a humectant that draws and holds water in the stratum corneum and supports barrier recovery; as a provitamin it feeds into pantothenic-acid (coenzyme A) pathways in skin cells.

Safety

Very well tolerated with a very low irritation profile; widely used in products for sensitive and compromised skin.

Dosage context

Commonly used in the low single-digit percentages as a supporting humectant/soother; benefit comes from the overall moisturiser rather than from panthenol alone.

Examples of application

Found in soothing moisturisers and after-sun/barrier products.
Layered anytime for comfort; very hard to react to.
A supporting humectant, not a standalone anti-aging active.

From the field

Panthenol is the friendly supporting act: it won't transform your skin, but it's hard to react to and genuinely soothing. Grade C, and a sensible pick when comfort is the goal.

Related molecules

CeramidesB NiacinamideB Centella asiatica (Cica)C

Follow this entry

We'll tell you if the grade for Panthenol (provitamin B5) changes.

One review a week: new evidence, grade changes and what was updated. No hype, no promotions disguised as news.

How we assign grades → Method