Panthenol

パンテノール

Also known as: Provitamin B5, dexpanthenol

Soothing / Barrier (鎮静) cosmetic strong evidence

What It Does

A provitamin that converts to vitamin B5 in the skin. Deeply hydrates, soothes irritation, and supports the skin barrier repair process.

Panthenol, also known as provitamin B5, is a humectant and skin-soothing ingredient that converts to pantothenic acid (vitamin B5) when absorbed by the skin. It is a staple in both skincare and haircare for its moisturizing, healing, and anti-inflammatory properties. Panthenol is exceptionally gentle and suitable for even the most sensitive skin.

Panthenol attracts and binds water, providing deep hydration. It also accelerates wound healing, reduces inflammation, and improves skin barrier function. In haircare, it penetrates the hair shaft to strengthen and add shine. Panthenol is often used in products for damaged, irritated, or post-procedure skin.

Japanese skincare incorporates panthenol across all categories, from cleansers to moisturizers to sunscreens. It is particularly common in products marketed for sensitive skin or skin recovering from treatments. Many Japanese baby products feature panthenol prominently.

How It Works

Converts to pantothenic acid (vitamin B5) in skin. Binds water for hydration, accelerates healing, reduces inflammation, and strengthens barrier function.

The Japanese Context

Widely used across Japanese skincare categories. Common in sensitive skin and baby products.

Best For

all skinsensitive skin dehydration irritation barrier damage redness

How It's Used

Typical concentration: 1 to 5%

Ingredient Interactions

Side Effects and Cautions

Extremely well tolerated. Very rare irritation.

Products With Panthenol