Hi.. Don't worry about pimples, Just Go Naturally or try Ayurveda.
please Avoid soap on Face, use Neem Leaf paste for scrubbing & cleaning Face this will remote both dust & bacteria.
Than For Applying on face for pimples & dark spot use Kumkumadi oil for dark spot apply @ night.
Apply Erimedadi oil for pimples two times a day & Apply paste of haldi 1/4 tsp + paste of tulsi Leaves + paste of Triphala powder 1 tsp mix it apply on Face, when it becomes dry wash it.
Next Steps
consult Ayurvedic physician
Health Tips
Avoid Salty Food, spicy, Junk, fermented Food.