Minoxidil liquid generally has a higher alcohol concentration than the foam. It is more drying and irritating to the scalp in some patients. I would recommend switching to the foam version and if that continues to cause irritation, then try the application once per day.
For my patients I have a lab formulate my own formulation of 5% minoxidil which has a proprietary blend of oils which helps with the irritation and scalp dryness.
This is most likely due to the propylene glycol that is used to mix in your minoxidil. Switch to the foam version.
Do people get skin irritation with regaine?
If you have redness and itching after you user minoxidil for your #hairloss that means you are allergic to the product. You need to stop using it.