A cosmetic shall be deemed to be misbranded (1) if its labeling is false or misleading in any particular; or (2) if in package form, unless it bears a label containing (a) the name and place of business of the manufacturer, packer, or distributor; and (b) an accurate statement of the quantity of the contents in terms of weight, measure, or numerical count: PROVIDED, That under clause (b) of this section reasonable variations shall be permitted, and exemptions as to small packages shall be established, by regulations prescribed by the director.