Welcome to Healthcare Magic You should take care of your skin first. Avoid using any irritant and allergic substance on your skin. Avoid sun exposure. Use sunscreen SPF25 for sun protection during the day. Avoid oily, fatty, spicy food. Eat plenty of fresh fruits and green leafy vegetables. Drink plenty of water. The pimples can be treated after proper examination by a Dermatologist to find the present state of them and the right treatment. The allergy can be related to certain food you eat, dust, pollen exposure as well. You should avoid what you are allergic to. Many effective treatment have been used for treatment of acne like chemical peels, retinoids, hydroquinone and laser to remove pigmentation as well. Kindly consult a Dermatologist for proper diagnosis and management.