WHO recommends formula:
• Isopropyl alcohol 75% (v/v)
• Glycerol 1.45% (v/v),
• Hydrogen peroxide0.125% (v/v).
“It is strongly recommended that no ingredients other than those specified here be added to the formulations. In the case of any additions, full justification must be provided together with documented safety of the additive, its compatibility with the other ingredients, and all relevant details should be given on the product label.
In general, it is not recommended to add any bittering agents to reduce the risk of ingestion of the handrubs. A colorant may be incorporated to differentiate the handrub from other fluids as long as such an additive is safe and compatible with the essential components of the handrubs.