the claim The Laneige Lip Sleeping Mask (Berry) claims to be a leave-on lip mask that soothes and moisturizes for smoother, more supple lips.   the science The ingredient list in this formulation looks extensive, but if you investigate closer, you will note that there are several alternative names for the same ingredient provided. There are many moisturising and hydrating components. Diisostearyl Malate is present at the highest concentration and is simply a skin conditioning agent and emollient predominantly used in lip products. Hydrogenated Polyisobutene is included for its ability to reinforce the skin barrier to reduce moisture loss, rather than to actually deliver hydration whereas Dimethicone helps form a…