Dark circles are a common problem but the cause for its occurrence has to be determined. Most of the times, it's genetic that is it runs in the family. But inadequate sleep, nutritional deficiency or working on laptop for long hours can also cause this. Please get your hemoglobin checked. Creams can be tried, which are specially made for treating pigmentation on this area. Chemical peels are also another option. Please use a sunscreen. You can consult me for detailed prescription and all other precaution to be taken. There are many reasons for hair fall. So first and foremost we have to find the cause with the help of detailed history and examination. Some of the common causes are nutritional deficiency, hormonal causes like androgenic alopecia or patterned baldness, telogen effluvium etc. Unless we find and treat the cause there is no point in giving non specific treatment. Oils or shampoos do not have any effect on hair growth as they are not absorbed in the skin. Consult me for treatment.