Pharmaceutical aerosol systems vary based on formulation type, application route, and dose delivery mechanism.
Types of Aerosol Systems
Liquefied Gas Systems
Propellants: Hydrocarbons or nitrous oxide.
Mechanism: Propellant evaporates to expel product.
Uses: Hairsprays, deodorants.
Compressed Gas Systems
Propellants: Nitrogen, CO₂, or air.
Mechanism: Compressed gas forces product out.
Uses: Food-grade aerosols, medical sprays.
Bag-on-Valve (BOV) Systems
Mechanism: Product in a bag, separated from propellant.
Advantages: 360° dispensing, minimal wastage.
Uses: Sunscreens, nasal sprays.
Foam Systems
Mechanism: Propellant creates foam.
Uses: Shaving creams, hair mousse.
Metered Dose Systems
Mechanism: Precise dosing per actuation.
Uses: Asthma inhalers, nasal sprays.
Powder Aerosol Systems
Mechanism: Compressed gas expels dry powders.
Uses: Dry shampoos, powdered medications.
Dual-Chamber Systems
Mechanism: Separate chambers for mixing on dispensing.
Uses: Self-foaming cleansers, two-part adhesives.