I don’t quite understand the science behind this but if you have been wondering if you should get some, do it. They do what they say they do. They are incredibly gentle and soft on skin. They result in less product use, the product seems to absorb more quickly. Some reviews said they are too thin for swiping over the skin and yes, they can roll if you swipe vigorously but truthfully, if you are careful they are totally fine. I use them with cleansing water, toners, essence, ampoules and watery serums. Probably not ideal for removing makeup as the fibres are fine and not designed to hold on to stuff. Excellent product and affordable. These have earned a spot on every online order in the future.