So essentially SNS is acrylic powder (it is in fact a BRAND, not a product. SNS is actually an acrylic powder (it's a BRAND name, not a product name). Unfortunately, so many nail salons claim that SNS is very beneficial for your nails as it contains beneficial vitamins and calcium. In fact, it contains 0.0039% vitamin E, and since your nails are made of KERATIN, not calcium, the calcium ingredient is simply useless). Many nail salons simply use SNS because of the minimum amount of product needed, which saves the salon a lot of money. SNS also has a superglue in it (they call it Sealant, but its chemical ingredients are basically the same as superglue). Also, when applying SNS, each client dips their fingers into the same jar of powder! And it is an ideal breeding ground for bacteria and fungi. Like most qualified E-File technicians , we do not offer and will never offer SNS service The health of your nails is our number one priority.