Hello Birajit sir,
Hope you are doning good,
As per you question about increase in hair density with the help of mesotherapy.
As you must be knowing mesotheray means - botonical stem cells or botonical growth factors which are used inhair fall control treatment,
In meso we use the combination of these stem cells like antihair loss factors + hair growth factors+ hair restoration factors.
This treatment help to control the hair fall , then it help to preserve the existing hair follicles+ it help to restore the roots available.
Differnt clinic follow different mode of combination while doing meso therapy
So people combine it with laser lights therapy also.
The main role of this treatment is to maintain the existing hair and to increse the strength of the existing hair.
Only meso therapy or only prp can help upto 30-50 %in maintaining the hair , but when combined with proper medications and under guidance of good dermatologist you can achieve a wonderful result in your hair density.
In allopathy medical science 5% to 10% failure rate is possible as the action of medication differs from patient to patient.
But before planning for any treatment try to meet the patient who have done mesotherapy before and see their review about the procedure and results.