Customary home occupations such as dressmaking, millinery, hairdressing, manicuring and home cooking, provided that such occupations shall be conducted and operated solely by resident occupants of the main building and provided that such occupation does not occupy an area greater than 1/4 of the first floor area and that no display of products or goods or services rendered shall be visible from outside the dwelling. Such use shall be clearly and exclusively incidental to the use of the dwelling for dwelling purposes and shall not change the character thereof. The conducting of an animal hospital, barbershop, beauty parlor, clinic, hospital, tea room or any similar use shall not be deemed to be a home occupation. No accessory building shall be used for a home occupation.