ILNP Highline is a very warm-toned, medium-dark duochrome with a metallic finish. It is a permanent nail lacquer that retails for $12.50 and contains 0.4 oz.
ILNP Highline Ultra Chrome Nail Polish ($12.50 for 0.4 oz.) has a soft black base that deepens with more coats paired with multichromatic shift that went between bluish-green, emerald green, dark olive green, and burnished gold that resulted in a fine, metallic finish. The consistency was fluid, smooth, and easy to work with on my nails for an even application of color and no almost no visible brush strokes (in person). The shift was incredibly intense and visible from different angles and under most lighting conditions--no hunting around for it.
Per the brand, it has its maximum coverage in two to three coats. In the swatches, I've applied two coats and then one layer of Zoya Armor top coat (though I added Zoya Anchor as a base coat when I tested for longevity), which was plenty for full opacity. I wore this shade for 10 days and had minor tip wear and no chips.
FURTHER READING: Formula Overview, which is a detailed review of the range as a whole.
Butyl Acetate, Ethyl Acetate, Nitrocellulose, Adipic Acid / Neopentyl Glycol / Trimellitic Anhydride Copolymer, Acetyl Tributyl Citrate, Isopropyl Alcohol, Stearalkonium Bentonite, Acrylates Copolymer, Styrene / Acrylates Copolymer, Silica, Benzophenone-1, Trimethylpentanediyl Dibenzoate MAY CONTAIN Titanium Dioxide (CI 77891), Iron Oxides (CI 77489, CI 77491, CI 77492, CI 77499), Red 6 (CI 15850), Red 7 (CI 15850), Red 34 (CI 15880), Yellow 5 (CI 19140), Blue 27 (CI 75510), Black 2 (CI 77266), Mica, Aluminum Powder (CI 77000)
Disclaimer: Ingredient lists are as available by the brand (or retailer) at the time of publishing. Please always check product packaging, if it exists, for the ingredient list applicable to the product you're purchasing, or the brand or retailer's website for the most up-to-date ingredient list.