So my OPI Black Shatter Polish finally arrived :) and I've been itching to see how it compares to Barry M's Instant Nail Effects black crackle polish, I currently had on OPI DS Sapphire, so I applied it on top. In all these swatches the crackle polish was applied on top of seche vite top coat thickly and non overlapping
OPI Black Shatter over OPI DS Sapphire
Barry M Instant Nail Effects Crackle Polish over China Glaze For Audrey
Barry M Instant Nail Effects Crackle Polish over China Glaze Sun Worshiper
The Barry M Instant Nail Effects Crackle polish definitely has a more crackled effect than OPI Black Shatter, as you can see from the pics, it also dries a bit more matte than the OPI, (top coat was added to the one with Sun Worshiper), another bonus of the Barry M is the fact that it dried a lot quicker also.
The next picture shows how the Barry M Instant Nail Effects Crackle responds very differently when applied on top of a holographic polish with no top coat, as you can see the effect is much thinner cracks but I must admit I like this effect, I will add a picture of the OPI Black Shatter on top of a holo with no top coat when I get a chance to try it out :)
Barry M Instant Nail Effects over Make Up Store Siw (blue holographic)
I'm quite shocked to say this but Barry M's Instant Nail Effects Polish which retails at only £3.99 here in the UK, is the clear winner, I think I actually prefer the crackle effect with this polish, and really like its matte finish and quick drying time! :)