more of gimmick gadget noe effective in eliminating double chins [SEP] videoiddoes this thing actually workwell you first should put the jaw exerciser in hot water for minutes to soften it and then after removing the protecting strips you would bite down to put pressure and allow the softened device to be molded according to your individual jawline which will make the jaw exercises more effectivei have been trying it for the last months while it is better than nothing the jaw muscles are probably the most neglected and difficult to exercise on a regular basis so for that purpose any exercise is a plus however if you totally depend your double chins be gone on this gadget you would be drastically disappointed simply it is a supplement to health diet regular exercises and sleep well that is the only way to burn fat and eliminating double chins this or any jaw exerciser is just a gimmick gadgetnot recommended