Watercress is helpful in curing acne. Juice it and apply it on the affected skin.
Aloe Vera is good for treating the skin. Apply the juice if you get it fresh, otherwise, you can use Aloe Vera soaps and gels available.
Mix equal portions of ground nut oil and lemon juice and apply on acne. This is a good treatment for scars and marks also.
Avoid: French fries, sweets, iodized salt and kelp
Avoid constipation. Read about natural remedies for constipation