27 CFR §5.53
All capital and lowercase letters in statements of mandatory information on labels must meet the following type size requirements.
- (a)Containers of more than 200 milliliters. All mandatory information must be in script, type, or printing that is at least two millimeters in height.
- (b)Containers of 200 milliliters or less. All mandatory information must be in script, type, or printing that is at least one millimeter in height.