Hi there young lady,
As mentioned you appear to have an acne issue on and off that responds well to Deriva & you appear a fellow Bengalurean.
Face cleansing routine and use of a good oil free face cleansing agent like Cetaphil for oily skin and left in contact for 3-5 mins while washing face is important as well.
Acnicin gel or Clearwin plus are two suggestions you may try that should prove far cheaper cost wise and contain the same ingredients as Deriva cms gel
Good Luck 🍀
Next Steps
Do feel free to consult online on this portal or any other especially since you reside in Blr apparently when your economic situation improves.
Health Tips
Face cleansing as advised above
Dab dry and do not pinch at the acne