Kylie Cosmetics Lip Liner in Kourt K ($29) contains 0.03 oz/1.0g of product. The formula of the lip liner is creamy and applies very smoothly. The lip liner is cruelty-free, paraben-free, and made in the USA. The product does contain dimethicone which is a form of silicone. As a reference the ColourPop Lippie Pencils ($5) also contain 0.03 oz/1.0 g of product and the packaging is nearly identical. Both lip liners are made out of plastic and must be sharpened. The formula are nearly identical in the way they perform and they both have a very similar list of ingredients.
Kylie Cosmetics Matte Liquid Lipstick in Kourt K, as mentioned in the video this color is quite patchy which is the thing I dislike the most out of this formula. Generally speaking darker liquid lipsticks apply patchy, it's just the nature of them. If you want a more opaque look I would recommend filling your lips entirely with the lip liner before applying the matte liquid lipstick.
Kylie Cosmetics Lip Liner in Kourt K and the ColourPop Lippie Pencil in Creature. The first swatch of each color is with one swipe, while the bottom one is a heavier swatch so you can see the color. They're not exact color dupes (I think Leather might be a closer dupe) but they're still in the same color family and have the same matte finish. In this case I would say that ColourPop Lippie Pencil in Creature is even better than the Kylie Cosmetics Lip Liner in Kourt K.
Kylie Cosmetics Lip Liner in Kourt K and NYX Soft Matte Lip Cream in Transylvania are both blackened purples. Marc Jacobs Le Marc Lip Crème Lipstick in Blow and ColourPop Lippie Pencil in Creature are both dark berry shades. Once the lip colors are on the lips they're all going to give you a very dark and vampy pout.
Kylie Cosmetics Matte Liquid Lipstick in Kourt K. In terms of application and formula, I found that it's closest dupe was the ColourPop Ultra Matte Lip. In terms of wear, I found that it wore the most similar to the Kat Von D Everlasting Liquid Lipstick. The Lime Crime Velvetines has a more liquidy formula and a higher opacity. The Gerard Cosmetics Hydra Matte Liquid Lipstick has a mousse like formula and feel on the lips. Both LA Splash Smitten Lip Tint and the LA Splash Lip Couture are much thicker and have an insanely long lasting formula that I often struggle to remove. And finally the Jeffree Star Velour Liquid Lipstick has a more liquidy and creamy formula.
Lip Kit by Kylie? Do you already own one? Let me know in the comments below.