If there are people who literally can't afford to buy hand sanitizer then that's a problem which needs to be dealt with separately, through non-market means. Artificially keeping cost low for everyone without increasing supply isn't the solution; all that does is create a situation where hand santisier is sold out everywhere and no one can get any. It also reduces the incentive for companies that manufacture hand sanitizer to increase their supply, and reduces the amount of capital they have available to increase production in the first place.