---
title: "Allantoin"
description: "Allantoin appears in skin-conditioning cosmetics and is a US OTC skin-protectant active under specific monograph conditions."
---
# Allantoin

> Allantoin appears in skin-conditioning cosmetics and is a US OTC skin-protectant active under specific monograph conditions.

Source: https://cosmetic-labs.com/glossary/allantoin
Created: 2026-11-09T10:22:21+00:00
Modified: 2026-11-09T10:22:21+00:00

## Definition of Allantoin
Allantoin is used in cosmetic skin-conditioning formulas and can be an active skin protectant in qualifying US over-the-counter drug products.

### Learn more

## What is allantoin?
Allantoin is a heterocyclic organic compound used as a skin-conditioning ingredient in cosmetics. Allantoin and some related complexes can act as skin-conditioning agents; their safety has been assessed for specified product categories and concentrations. That is a safety assessment, not a controlled trial showing that an allantoin-containing face cream repairs a damaged barrier or treats eczema. Allantoin is also distinct from allantoin panthenol, a complex a separate complex, and from [panthenol](/glossary/panthenol/) itself.

## Why do some labels call it a skin protectant?
In the United States, US over-the-counter skin-protectant rules list allantoin at 0.5% to 2% for qualifying drug products. A monograph specifies conditions for that drug category, including permitted uses and labeling; it is not a blanket authorization for every product that happens to contain allantoin. The concentration range describes the monograph’s active-ingredient provision, not a required or proven effective concentration for all cosmetics. Check whether a package is labeled as an OTC drug with an active ingredient, purpose, uses, warnings and directions, or as a cosmetic listing allantoin among its ingredients. Those are different contexts, even when the ingredient name is identical.

## How can it appear in a moisturizing formula?
A cosmetic can place allantoin alongside a [humectant](/glossary/humectant/) such as [glycerin](/glossary/glycerin/), an [emollient](/glossary/emollient/), or panthenol. Each name refers to an ingredient or functional category; the combination is not itself evidence that a particular finished formula outperforms another. [Ceramides](/glossary/ceramides/) are lipids present in the outer [skin barrier](/glossary/skin-barrier/), not a synonym for allantoin or proof of an allantoin effect. At the time of a safety assessment, allantoin had been reported in 1,376 cosmetic products at concentrations up to 2%. This is historical use information at the time it was measured, not a present-day census or a clinical efficacy threshold.

## What can you reasonably conclude?
Allantoin’s presence can explain why a cosmetic is described as skin-conditioning, and US drug labeling may identify it as a skin-protectant active within M016’s stated conditions. Neither fact, on its own, proves that an untested cosmetic treats a medical condition. Available safety data covered the reviewed categories and concentrations, with gaps for some related complexes; a different formula or use still needs its own assessment. Read the finished product’s category and directions, and seek clinical advice for persistent or worsening skin symptoms rather than relying on a single ingredient name.

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## Site identity

- Organization: Cosmetic Labs
- Description: Cosmetic Labs is a directory and a platform to meet all your cosmetic product development needs. From sourcing raw material to finding the best CRO for your needs.
- Website: https://cosmetic-labs.com