Thanks for expecting Assertive Health n progressive fittness for glowing skin, its sign of entire health, so demands well balanced diet and nutrition and exercise n Healthier habits n Routine also. Reduce salty n sour food n drinks habits, spare 3-4hrs between ur dinner n u sleep, at ur age bit of acne acceptable if it torturing n leaving black, demand Detox n Rasayan Therapy, may Rakta shudhi too. So consider to consult Authentic Holistic Ayurveda Approach.