I doubt very much that this is an authentic CND Shellac colour. I perused this website and it's just a nail art site that generalizes "Shellac" as a nail polish and gives conflicting advice and information. This looks very thick like gel. I found these paragraphs:
"9. Easy To Apply:
You can also apply these nail colors at home with precision, if the idea of going to a parlor every time sounds costly. They still last much longer than ordinary nail paints, even when done at home. Apply a single coat with broad strokes and leave it to dry for ten minutes. Apply the second coat with fine and thin strokes to get a perfect finish at home.
10. Inexpensive:
All these benefits sound too expensive, isn’t it? Well, no, certainly not. Shellac nail polishes are inexpensive beauty treatments that come well under 10 Euros/bottle. These pocket friendly amazing nail polishes can hugely transform the way you used to think about nail styling."