Yes it's totally safe and no side effects reported till today.
Although it's a temporary condition post delivery due to fall in level of Estrogen hormone post delivery and will solved within in a year as we see in our practice.
Next Steps
Take proper nutritious diet consist of fruits and vegetables.
Avoid harsh shampoo , use occasionally.
Avoid Hair dryer etc.
Health Tips
Avoid self medications and take proper Consultation for your condition accordingly.