The symptoms & case history mentioned in your post suggest that you might be having Androgenetic alopecia.
Also known as Male pattern baldness
, it usually follows a pattern of receding hairline & is related to genetic makeup and male sex hormones.
preparation to be applied directly to the scalp to stimulate the hair follicles, which you are already using.
preparations that interferes with the production of male hormone linked to baldness.
But these medications have to be used regularly under the guidance of a Dermatologist...as hair loss tends to return on stoppage of these medications.
Though there are few side effects, they are minimal & are well tolerated.
Those cases which do not respond to medical therapy, are managed by hair transplantation
It is also necessary to rule out other causes of hair loss, such as:
1. Environmental factors
3. Deficiency of certain minerals, vitamins & amino acids in diet. e.g. Iron, zinc, Vit B complex, lysine.
4. Hormonal factors. e.g. Thyroxine
5. Any incidence of surgery, shock, etc.
So...it will be better to consult a Dermatologist
& start treatment accordingly.
Wishing you a Good Health.
Thanks & take care.