Short-term fasting or juice cleanses cannot reverse the effects of a week of overeating during Diwali, experts say. Cut back on ultra-processed foods: Reduce sweets, fried snacks and sugary drinks without eliminating carbohydrates or fats. Keep your post-Diwali skincare routine simple: Use a gentle cleanser.. Post-Diwali detox can be simple and tasty with homemade drinks like lemon-ginger water, cucumber-mint cooler, amla-tulsi shots, CCF tea, green apple-celery juice, and coconut water with chia.