Hourglass Luminous Light is a very warm-toned, medium peach with a satin finish. It is a permanent powder that retails for $48.00 and contains 0.35 oz.
Hourglass Luminous Light Ambient Lighting Powder ($45.00 for 0.35 oz.) is described as a "champagne pearl." It's a light peach with a white shimmer but really goes on mostly colorless on the skin. This shade is designed to "create a soft, incandescent candlelight glow." It seemed just slightly brightening but added a fine sheen all-over the skin. When blended, I did not see any shimmer particles actually on the skin, though swatched heavily on the arm or hand will show some--but these seem to really blend and sheer out. The effect is, indeed, luminous. I would describe it as a step above glowy or a sheen, because I think the effect is a bit more obvious as a result of the sheen of the powder overall.
FURTHER READING: Formula Overview, which is a detailed review of the range as a whole.
Mica, Synthetic Fluorphlogopite, Boron Nitride, Hdi/Trimethylol Hexyllactone Crosspolymer, Polymethyl Methacrylate, Octyldodecanol, Silica, Benzimidazole Diamond Amidoethyl Urea Carbamoyl Propyl Polymethylsilsesquioxane, Sorbitan Sesquioleate, Magnesium Aluminum Silicate, Phenoxyethanol, Dimethicone, Sodium Dehydroacetate, Sorbic Acid, Polyacrylamide, Benzoic Acid, C13-14 Isoparaffin, Potassium Sorbate, Dehydroacetic Acid, Laureth-7, Ethylhexylglycerin, Trimethylsiloxysilicate. May Contain: Ci 77891 (Titanium Dioxide), Ci 77163 (Bismuth Oxychloride),Ci 77491 (Iron Oxide),Ci 77492 (Iron Oxide), Ci 77499 (Iron Oxide),Ci 75470 (Carmine).
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.