Types of Aerosol Systems

• Types of Aerosol Systems vary by formulation, such as solution, suspension, or emulsion-based delivery mechanisms.
• Pharmaceutical aerosol systems vary based on formulation type, application route, and dose delivery mechanism.

Types of Aerosol Systems:

1. Liquefied Gas Systems

   • Propellants: Hydrocarbons or nitrous oxide.
   • Mechanism: Propellant evaporates to expel product.
   • Uses: Hairsprays, deodorants.

2. Compressed Gas Systems

   • Propellants: Nitrogen, CO₂, or air.
   • Mechanism: Compressed gas forces product out.
   • Uses: Food-grade aerosols, medical sprays.

3. Bag-on-Valve (BOV) Systems

   • Mechanism: Product in a bag, separated from propellant.
   • Advantages: 360° dispensing, minimal wastage.
   • Uses: Sunscreens, nasal sprays.

4. Foam Systems

   • Mechanism: Propellant creates foam.
   • Uses: Shaving creams, hair mousse.

5. Metered Dose Systems

   • Mechanism: Precise dosing per actuation.
   • Uses: Asthma inhalers, nasal sprays.

6. Powder Aerosol Systems

   • Mechanism: Compressed gas expels dry powders.
   • Uses: Dry shampoos, powdered medications.

7. Dual-Chamber Systems

   • Mechanism: Separate chambers for mixing on dispensing.
   • Uses: Self-foaming cleansers, two-part adhesives.

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