Ammonium Chloride

What is Ammonium Chloride?

Ammonium Chloride is a white, crystalline inorganic salt derived from ammonia and hydrochloric acid, typically produced synthetically for industrial and cosmetic applications. In skincare and hair care products like shampoos, conditioners, and cleansers, it functions primarily by dissolving in water to release ammonium ions. These ions help maintain optimal pH levels for product stability, preventing shifts that could affect performance or shelf life. It also modifies the thickness of formulations, ensuring smooth application and even distribution of active components. Additionally, it neutralizes off-odors from other ingredients, contributing to a more pleasant user experience without altering the core scent profile. Its role is supportive rather than active, enhancing overall formula integrity across rinse-off and leave-on products.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 2 View on EWG →
PubChem View on PubChem →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Fragrance ingredient
Contributes scent character and/or masks base odors, shaping the overall sensory experience of the formula (subject to allergen and IFRA considerations).
Viscosity controlling agent
Adjusts thickness to the desired level for stability and usability, improving dispensing, suspension, and texture across many formulation types.
Buffering agent
Maintains the pH stability of a formulation.
Masking
Reduces perception of unpleasant odors or tastes by neutralizing them or covering them with more acceptable sensory notes.

Benefits

Helps stabilize pH for consistent product performance.

Adjusts viscosity for better texture and spreadability.

Masks unpleasant odors to improve sensory appeal.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
Users of hair care products seeking stable formulations.
People with known sensitivity to ammonium compounds.
Individuals preferring non-comedogenic ingredients.
Individuals with damaged skin barriers.
Those with normal skin types using daily cleansers.
Users prone to eye irritation from rinse-off products.

Safety Notes

  • Rated low hazard by EWG with score of 2.
  • Deemed safe for cosmetic use by Cosmetic Ingredient Review.

Frequently Asked Questions about Ammonium Chloride

What is Ammonium Chloride used for in cosmetics?

It acts as a buffering agent to maintain pH, viscosity controller for texture, and masking agent for odors.

Is Ammonium Chloride comedogenic?

It has a comedogenic rating of 0, making it non-pore-clogging.

How safe is Ammonium Chloride in skincare?

EWG rates it 2 (low hazard), and it's approved safe by regulatory reviews for cosmetic use.