Clionadh Spark is a very cool-toned, light duochrome with a pearl finish. It is a permanent highlighter that retails for $12.50 and contains 0.21 oz.
Clionadh Spark Powder Highlighter ($15.00 for 0.21 oz.) has a transparent base with iridescent shimmer that seemed to shift between warmer pink and cooler lavender with a luminous finish. The texture was soft, smooth, and a little powdery, though it did not appear dry or powdery once applied and blended out on my skin.
It had mostly opaque, buildable color coverage that applied evenly and diffused well with a luminosity that did not accentuate my skin texture. It did not seem to be quite as intense in its color-shift compared to other shades in the range, though. It wore well for eight and a half hours before fading visibly.
FURTHER READING: Formula Overview, which is a detailed review of the range as a whole.
Mica, Titanium Dioxide, Dimethicone, Caprylic/ Capric Triglyceride, Isopropyl Myristate, Tin Oxide, Iron Oxide, Zinc Stearate, Calcium Carbonate, Copernicia Cerifera (Carnauba) Wax, Kaolin, Silica, Allantoin, Boron Nitride, Magnesium Stearate. May Contain: +/- Ultramarines, +/- Chromium Oxide Green, +/- Ferric Ferrocyanide, +/- Bismuth Oxychloride, +/- Manganese Violet.
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.