Money Savings: Foam applicator for regular liquid to save $?

Curious if anyone has found a way to turn the regular liquid minoxidil into the foam version without having to spend nearly twice the amount on the store version?

Would a foam sprayer suffice or is there something else in the foam product added to help it become airy?

you can’t just use a foam sprayer to turn liquid min into foam. the foam version doesn’t have propylene glycol and uses specific foaming agents to create that texture. if cost is an issue, maybe stick with liquid and apply carefully, or check out deals with the product finder.