Guerlain #520 is a moderately warm-toned, very light sheer with a luminous finish. It is a permanent lipstick that retails for $33.00 and contains 0.12 oz.
Guerlain #520 Rouge G de Guerlain Lip Color (2018) ($32.00 for 0.12 oz.) is an ultra-sheer, soft pink with a luminous sheen. Per the brand, this is a "pink that is only revealed on contact with its wearer lips" and that the end result is "always unique." I didn't notice any change--it appeared as a soft, translucent pink on me (and a warm pink in the tube) whether on my skin or lips. I waited 10 minutes prior to photographing waiting for a visible change but no luck on my end. This shade amounted to sheer, pinkish lip balm. If this had provided more of a stain, it would have been interesting, but while hydrating, it's not as hydrating as the best lip balm. I also felt like this didn't wear very long (two hours) as the texture was thin and very emollient.
FURTHER READING: Formula Overview, which is a detailed review of the range as a whole.
For this exceptional lipstick, Guerlain has sealed intense colour and luscious lip care into a jewel formula. Enriched with plant-based polymers and silver microcrystals with a reflective power, this exceptional formula beautifully enhances lips, cloaking them in intense and luminous long-lasting colour. Jojoba and mango butter help to nourish lips, offering them instant and lasting comfort. Hyaluronic acid and gugul resin help to smooth and plump up lips. The sweet, enveloping scent of a vanilla “floriental” leaves its incomparable mark on Rouge G de Guerlain. Top notes sparkle with a lemon, orange and bergamot accord. The rose and iris heart exudes sweetness. The vanilla and tonka bean drydown gives Rouge G all of its intensity.
Diisostearyl Malate, Polyglyceryl-10 Nonaisostearate, Jojoba Esters, Synthetic Wax, Bis-behenyl/Isostearyl/Phytosteryl Dimer Dilinoleyl Dimer Dilinoleate, Isostearyl Hydroxystearate, Hydrogenated Microcrystalline Wax, Silica, Hydrogenated Styrene/Methyl Styrene/Indene Copolymer, Octyldodecanol, Ethylhexyl Palmitate, Irvingia Gabonensis Kernel Butter, Disteardimonium Hectorite, Calcium Aluminum Borosilicate, Hydrogenated Coco-glycerides, Caprylic/Capric Triglyceride, Parfum (Fragrance), Ethylhexyl Hydroxystearate, Commiphora Mukul Resin Extract, Bht, Propyl Gallate, Trihydroxystearin, Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate, Butylene Glycol, Caprylyl Glycol, Tocopherol, Phenoxyethanol, Sodium Hyaluronate, Hexylene Glycol, [+/- May Contain : Ci 77891 (Titanium Dioxide), Ci 19140 (Yellow 5 Lake), Ci 42090 (Blue 1 Lake), Ci 45410 (*** Red 28 Lake ***), Ci 45410 (Red 28 Lake), Ci 15850 (Red 7 Lake), Ci 15985 (Yellow 6 Lake), Ci 77492 (Iron Oxides), Ci 15850 (Red 7), Ci 77491 (Iron Oxides), Ci 15850 (Red 6), Ci 77163 (Bismuth Oxychloride), Ci 77499 (Iron Oxides), Ci 45380 (Red 21 #12426)
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.