?? Tretinoin is a topical treatment for human acne, that's not at all relevant to orally dosing chickens of varying sizes with Fenbendazole.“To use the cream, gel, or lotion form of this medicine:
- Apply just enough medicine to very lightly cover the affected areas, and rub in gently but well. A pea-sized amount is enough to cover the whole face.
- You may need to use a moisturizer while you are using the lotion.”
- Link: https://www.mayoclinic.org/drugs-supplements/tretinoin-topical-route/proper-use/drg-20066521.
- Pea-sized is an amount. Peas only come in one size.