This was done with the sponging technique and lightly transparent polishes so it could be applied in multiple stages and still bleed nicely (unlike a thick solid color). Did the base in Sinful Colors Purple Diamond (2 coats), then started in with Sinful Colors Fiji. With the makeup sponge I dabbed near to the top of the nail down to the tip once, then again starting a little bit lower, then a third time a little further down the nail yet.
So at that point it’s 2 coats of the base and 3 coats of the second purple starting at different points on the nail. There’s a little overlap as you dab the nails but that’s sort of the point, you just want them to bleed together as easily as possible.
For the tips I went in with Sinful Colors Let’s Talk and did another couple of gradient layers. Purrrrrdy purple. (and again, no cleanup yet on this, was right before I went to bed and just couldn’t be bothered.)