Can I apply insect repellent on my 6-month-old? What is a safe brand to use?

Since insect repellants usually contain deet (an active chemical ingredient in insect repellents), you might want to try natural repellents that are made with plant oils such as citronella, lemongrass, peppermint, and cedarwood. However they need to be reapplied more often than products containing deet. You could try Human Nature's Bug Shield Deet Free Oil. They retail from 7.90SGD onwards and you can get them here: http://www.humannature.com.sg/product.php?prodgrpid=08001-citron