Aluminium Chlorohydrate (ACH) liquid is commonly used in antiperspirants and personal care products due to its proven effectiveness in reducing sweat and controlling odor. Here is a summary of its applications in this field:

1. Sweat Reduction:

   • ACH liquid is the active ingredient in most antiperspirants. It works by forming a gel-like plug in the sweat ducts, which temporarily blocks sweat from reaching the skin's surface. This reduces sweat output without permanently affecting the sweat glands.

2. Odor Control:  

   • By limiting sweat production, ACH liquid helps in controlling body odor. Less sweat means a drier environment, which reduces bacterial activity responsible for breaking down sweat into odor-causing compounds.

3. Versatility in Formulations:

   • ACH liquid is easily soluble in water, making it ideal for inclusion in various personal care product types such as:
     • Roll-ons
     • Gels
     • Lotions
     • Sprays
   • It is commonly used in water-based formulations, providing ease of incorporation and uniform distribution in the final product.

4. Skin-Friendly Characteristics:

   • ACH liquid is less irritating compared to other aluminum-based compounds (e.g., aluminum chloride). This makes it a popular choice for daily-use antiperspirants, especially for those with sensitive skin.

5. Mild Astringent Action:

   • Besides reducing sweat, ACH liquid acts as an astringent, causing temporary tightening of the skin and reducing the appearance of large pores, which enhances its antiperspirant effect.

6. Product Stability:

   • As a liquid, ACH allows for better stability in formulations and ensures even distribution of the active ingredient throughout the product. This makes it suitable for mass production of various antiperspirant and deodorant products.

7. Regulatory Approval:

   • ACH liquid is widely recognized as safe for use in personal care products, regulated to specific concentration levels to balance efficacy and safety.

ACH liquid is a key ingredient in modern antiperspirants due to its effectiveness in controlling sweat and odor while offering formulation flexibility and gentleness on the skin.