Hi Pimples occur due to blockage of oil from oil glands in the skin and it occurs under hormonal influence. Certain factors which may aggravate pimples are stress, oil based occlusive cosmetics and food items like milk and other dairy products. Hot environment may aggravate the condition but it is not a primary cause of acne. To cure acne you need to work on root cause if acne and only home remedies might not help. Please visit a dermatologist for genuine information and proper treatment. Best regards Dr Vijay Adhe, Eternis Skin & Hair Clinic, Pune. www.eternisclinic.com