AMMONIA
Commonly Found In
Overview
AMMONIA is a cosmetic ingredient primarily used for BUFFERING. It is commonly found in various cosmetic formulations and serves important functions in personal care products.
Also known as: Ammonia water, Ammonium hydroxide solution, NH3
Key Benefits
Ammonia has no skin benefits and is used solely for pH adjustment in certain hair products. At concentrated levels it is a strong irritant.
Skin Compatibility Ratings
Comedogenic Rating
Non-comedogenic; used primarily as a pH adjuster at trace concentrations that completely neutralize in the final product.
Source: CIR Expert Panel; physicochemical properties
Irritancy Rating
Moderate-to-high irritancy in concentrated form; as a gas, ammonia is a primary irritant to mucous membranes, eyes, and respiratory tract. In cosmetics, it is buffered and present in the final product as ammonium ions at near-neutral pH, substantially reducing irritation risk at finished product use levels.
Source: CIR Expert Panel safety assessment; ECHA CLP classification
Typical Use Concentration
Range
Up to 6% (EU Annex III limit for hair products)
Optimal
1β4%
Used at controlled concentrations for pH adjustment in oxidative hair color products.
Works Well With / Avoid
Works Well With
Avoid Combining
Use With Caution
EU Annex III restricted; use concentration strictly controlled. High irritancy at concentrated levels; causes skin burns.
Commonly Found In
Global Regulation Summary
Overview of current status across major international markets.
Detailed Regional Status
| Region | Status | Max Conc. | Conditions | Source |
|---|---|---|---|---|
| πͺπΊ EU | Banned | - | - | Official β |
| πΊπΈ USA | Allowed | - | - | Official β |
| π―π΅ Japan | Allowed | - | - | Official β |
| π°π· Korea | Unknown | - | - | Official β |
| π¬π§ UK | Restricted | - | Follows EU regulations (III/4) | Official β |
π Why Regulations Differ
The EU restricts ammonia in cosmetics under Annex III (maximum concentrations and conditions of use) due to its irritant and corrosive potential. The US and Japan permit use but rely on general safety requirements and industry guidelines.
Regulation Analysis
Regional Agreement
Banned in EU but allowed in USA, Japan.
Category Comparison
There are 41 ingredients in the BUFFERING category. 100% are banned in at least one major market.
Strictness Ranking
πΏ Natural Sources
Produced naturally by decomposition of organic matter containing nitrogen. Found in soil, water, and air. Generated by bacteria, volcanoes, and natural biological processes including human metabolism.
π How It's Made
Produced by the Haber-Bosch process: nitrogen from air reacts with hydrogen (from natural gas) at 400-500Β°C and 150-250 atmospheres pressure with an iron catalyst. One of the most important industrial processes ever invented.
π Uses in Cosmetics
Used in cosmetic products primarily for buffering, fragrance.
π¬ Other Applications
The single largest use is in fertilizers (about 80% of production). Also used in household cleaners, refrigeration systems, textile manufacturing, explosives, and pharmaceutical production.
π‘ Fun Facts
- β’ The Haber-Bosch process for making ammonia is estimated to support the food production for nearly half of the world's population through fertilizer
- β’ Fritz Haber won the Nobel Prize in 1918 for synthesizing ammonia, but is also known as the 'father of chemical warfare' for his role in developing poison gas
- β’ Jupiter's atmosphere contains ammonia clouds, and the distinctive smell on some other planets is likely ammonia
Data Sources
- β’ EU CosIng database β Annex III/4
- β’ FDA cosmetic ingredient database
- β’ CIR Safety Assessment of ammonia
Last data verification: 2026-04-16
Related Ingredients
TRIETHANOLAMINE
CITRIC ACID
ACETALDEHYDE
AMMONIUM HYDROXIDE
CEDRUS ATLANTICA BARK OIL
CITRUS AURANTIFOLIA PEEL OIL
Learn More
Frequently Asked Questions
Why is AMMONIA banned in the EU but allowed in the US?
The EU follows a precautionary principle, banning AMMONIA under III/4 due to potential safety concerns. The US FDA has not found sufficient evidence to prohibit its use, allowing it under different safety assessment standards. This reflects differing regulatory philosophies between the two regions.
Why is AMMONIA banned in the EU but allowed in Japan?
The EU prohibits AMMONIA (III/4) based on their strict safety criteria. Japan's Ministry of Health, Labour and Welfare (MHLW) has evaluated the ingredient and permits its use, potentially with different safety data or usage conditions.
What is AMMONIA used for in cosmetics?
AMMONIA is primarily used for buffering in cosmetic products. It also serves as fragrance. The ingredient is commonly found in various cosmetic and personal care products.
Which countries regulate AMMONIA?
AMMONIA is banned in EU. It has concentration limits or usage restrictions in UK. The ingredient is freely allowed in JP, US.
Are there alternatives to AMMONIA?
Due to regulatory restrictions on AMMONIA, cosmetic manufacturers often use alternative ingredients with similar functions. For buffering, alternatives may include other approved ingredients in the same category. Consult product labels for specific formulations, and look for products compliant with your region's regulations.
Disclaimer
The information on this website is for educational and informational purposes only and is not intended as medical advice. While we strive for accuracy based on official government databases, cosmetic regulations change frequently. Always consult with a qualified professional or refer to the latest official regulatory documents for compliance. We are not responsible for any actions taken based on the information provided here.