Amber Teething Necklaces are generally designed to reduce the pain babies experience during teething period. This mechanism is pretty straightforward: while a child is wearing these, his/her body heat the amber so SUCCINIC ACID in the form of oil release from the beads. Technically, SUCCINIC ACID gets absorbed into the bloodstream and functioning as a painkiller, specifically teething pain. It is important to make sure that Teething Necklaces are made from Baltic Amber which is fossilized resin from sap of CONIFER trees. The raw amber is originated in the forests of Baltic countries, which among them the Lithuania offers the best; so be careful to buy the genuine ones. This product is provided in 3 different sizes: (30 cm & 32 cm & 34 cm) Benefits of Baltic Amber: The magic ingredient of Baltic Amber is SUCCINIC ACID, the key player of treatment. This Acid is found in many vitamin supplements, heart medicines and some anti-aging creams; and is also quite approved by scientists. Succinic Acid is valuable for: 1. Pain relief (Teething Pain, etc.) 2. Anti-inflammatory 3. Immune boosting 4. Antioxidant-rich 5. Calming and Soothing Baltic Amber Jewelry Tests Try one of these 2 tests to determine whether the amber you have is genuine. 1. Sight Test: Every single bead of Baltic Amber is unique so will have visible imperfections, whereas fake or plastic amber beads may be uniform and identical in color and texture. 2. Salt Water Test: In a large glass of water add 5 tablespoons of salt and gently drop your amber necklace into the glass. Genuine Baltic Amber will float (even with the weight of the threaded string), while fake amber, plastic and opal, will sink to the bottom of the glass.