CA Health & Safety Code Section 110335

The department may adopt regulations exempting from any labeling or packaging requirements of this part any food, drug, device, or cosmetic that is in accordance with the practice of the trade, to be processed, labeled, or repacked in substantial quantities at establishments other than those where originally processed and packed, on condition that the food, drug, device, or cosmetic is not adulterated or misbranded under the provisions of this part upon removal from the processing, labeling, or repacking establishment. Such food, drug, device, or cosmetic is subject to all other applicable provisions of this part. All regulations relating to the exemptions that are in effect on the effective date of this part, or that are adopted on or after that date, pursuant to the federal act, are automatically effective in this state. The department may, however, adopt any additional regulations concerning exemptions.