If anyone can help I would appriciate it. My 3 month old Bia

is sooo sweet and luvable, but sometimes her hair looks so dirty that I dont want to touch her I just want to put her into the sink and bathe her again. But I hug her anyways because i know you cant bathe them everyday. I clean her with oatmeal shampoo, spray her with moisturizing conditioner, and comb her out. she looks cleans, smells clean, and feels clean. But then the next day her hair looks and feels all oily or greasy.

Why?? If it's normal then okay I'll accept it, but if you think she might have like a skin problem or something please let me know. Thanks!!