online which is where I bought mine. It's also limited edition so if you have a desire for it you may want to act on it while you can. I really hope they make Disco Diva permanent and maybe do other colors.
Retro Revival is the base and I prefer it to Nfu-Oh Aqua Base. It's a bit thinner and dries much quicker on me compared to Aqua Base. The other task that this base is great for is matte and suede polishes. It helps with dragging and bald spots. If you like to use nail foils I have found that this (and Aqua Base) works really well as a top coat for them. No wrinkling or dulling.
Disco Diva is an amazing silver linear holographic polish. The rainbow and shine of this is just glowing. The formula is on the delicate side but I expect that since it's not rare for these metallic linear holos. The base helps and applying thin coats helps even more. This is just as holo as the original/good version of Nfu-Oh 61 and Gosh Holographic. It's a bit more holo than Make Up Store Greta and much more than China Glaze OMG. If you have been wanting a great silver linear holo - this is a wonderful choice.
I'm wearing top coat in these photos and as you can see it does not dull the holo. It's like having magic on your nails.