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Panthenol (Pro-Vitamin B5)

Humectant and Vitamin Derivative

Panthenol (Pro-Vitamin B5)

Calms irritation and repairs barrier

Key Benefits

  • Improves surface hydration
  • Supports the moisture barrier
  • Helps reduce dry, rough feel
  • Promotes skin comfort

How It Works

Panthenol binds water and helps maintain moisture within the stratum corneum, improving flexibility and softness. Once absorbed, it can be converted to pantothenic acid, a component of coenzyme A involved in normal cellular processes.

Its barrier-supporting effect is commonly measured through increased corneometry values and reduced transepidermal water loss. Pairing it with lipids and occlusives can create more complete support for very dry skin.

Ingredient Details

INCI Name: Panthenol

Ingredient Type: Provitamin humectant

Best For

Dry skin · Dehydrated skin · Sensitive-feeling skin · Compromised-looking barrier · All skin types needing lightweight hydration

Research

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What It Is

Panthenol is an alcohol analog of pantothenic acid, or vitamin B5. D-panthenol, also called dexpanthenol, is the biologically active form commonly used in topical products; DL-panthenol contains both optical forms.

It is water soluble, formulation friendly, and effective at supporting moisture without requiring a heavy or greasy texture. Panthenol is not an exfoliating acid despite the word acid in pantothenic acid.

What It Does

Panthenol increases hydration in the stratum corneum and helps reduce the rough, tight feel of dry skin. By supporting the outer barrier, it can also improve comfort when skin is exposed to cleansing, weather, or other routine stressors.

Clinical studies of panthenol-containing topical formulas report improvements in hydration and barrier-related measurements. Results still depend on concentration, vehicle, use frequency, and the other ingredients in the finished product.

Panthenol (Pro-Vitamin B5) FAQs

Common questions about this ingredient in skincare.

Is panthenol the same as vitamin B5?
Panthenol is the provitamin form of vitamin B5. In skin, dexpanthenol can be converted to pantothenic acid, the vitamin's biologically active form.
How does panthenol help the skin barrier?
It increases moisture in the outer skin layers and can reduce transepidermal water loss. This supports a smoother surface and a more comfortable barrier.
Is panthenol suitable for sensitive skin?
Panthenol is widely used in gentle and barrier-supporting formulas and is generally well tolerated. Anyone with highly reactive skin should still patch test the complete product.
Can panthenol be used every day?
Yes, panthenol is generally suitable for daily use in leave-on or rinse-off products. Follow the directions for the finished formula rather than treating it as a separate active treatment.
Can panthenol be combined with retinoids or exfoliating acids?
Panthenol is commonly paired with potentially drying actives because it supports hydration and comfort. It does not eliminate irritation risk, so introduce strong actives gradually and monitor the skin.
Does a higher panthenol percentage always work better?
Not necessarily. Performance depends on concentration, the delivery vehicle, supporting ingredients, and the needs of the skin; a well-balanced formula can matter more than a single headline percentage.
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