Amber works by releasing natural oils when in contact with the warmth of the skin. The oils have analgesic and anti-inflammatory properties. It's also high is succinic acid which is often used for treating acid reflux and heartburn, babies sometimes suffer from these when teething due to the excessive amount of salive swallowed. I got a MUM & BABY Amber necklace set from http://www.wildsheep.co.uk. They look amazing, brilliant service.