Thanks to Smart Silicone, a revolutionary breakthrough in lens chemistry, MyDay provides uncompromised comfort throughout your day. Here's how it works. Smart Silicone delivers oxygen to your eyes much more efficiently than other daily disposable brands, while using less silicone.* That's important because less silicone allows more room in the lens for built-in channels of moisture and a naturally water-loving lens material that keeps your eyes feeling moist. Less silicone also makes the MyDay lens wonderfully softï¿½softer than other silicone hydrogel, daily disposable lenses*ï¿½yet they're easy to insert and remove.