The Simpsons Se02 Ep02 Simpson and Delilah

Homer tries a new hair growth formula – Dimoxinil – and charges it to the power plant. He wakes up with a head full of hair, and he gets noticed around town – even by Mr Burns, who promotes him and gives him a male secretary, Karl. Smithers becomes jealous, and finds out that Homer charged Dimoxinil to the company, and confronts him – except Karl takes the blame, and Homer is left to go bald again when Bart breaks the bottle.