How to Make Carbonated Shampoo Using Chemical Reactions

A method for creating a carbonated shampoo by generating carbon dioxide gas inside a sealed container using specific chemical precursors to create foam and pressure.

What it covers

This patent describes a process for creating a carbonated hair-cleaning product. By adding specific chemicals like bicarbonates or carbonates into a container with shampoo and sealing it, the invention triggers a chemical reaction that generates carbon dioxide gas at concentrations exceeding 5,000 parts per million. This internal gas pressure is then used to propel the shampoo out of the container through a valve, causing it to foam as it hits atmospheric pressure. The process can also include active ingredients like minoxidil or zinc pyrrolidone carboxylic acid to be delivered alongside the carbonated foam.

What it doesn't cover

• —Does not cover shampoo products that use external pressurized gas canisters (like traditional aerosol cans) where the gas is not generated by an internal chemical reaction.
• —Does not cover non-foaming shampoo formulations that do not rely on carbon dioxide for propulsion or texture.
• —Does not cover methods of carbonation that involve mechanical injection of CO2 gas rather than chemical generation from precursors.

The clever bit

The innovation lies in using the chemical reaction itself to generate both the foaming agent and the propulsion force required to dispense the product, effectively turning the shampoo container into a mini chemical reactor.

Why it matters

This patent focuses on a self-contained method for creating carbonated personal care products without needing complex external gas charging equipment. It is relevant to the cosmetics and hair care industry, specifically for products aiming to deliver active ingredients like minoxidil via a foaming, pressurized delivery system.

Real-world examples

• 1.Foaming hair treatment dispensers
• 2.Self-pressurizing cosmetic foam bottles