This is the problem today, many of us perceive estrogen as being "bad" when in reality, it provides many more positives than negatives. Read studies and you will know for certain the truth.
Estradiol prolongs the anagen (growing) phase which means hair grows longer. Estrogen prevents early hair shedding. If you are experiencing issues, it may be due to too little estrogen, not too much. 2 pumps is a small dose.