MAC Oyster Girl is a slightly cool-toned, very light pink with a pearl finish. It is a permanent lipgloss that retails for $21.00 and contains 0.1 oz.
MAC Oyster Girl Lipglass ($17.00 for 0.10 fl. oz.) is a light, cooler pink paired with warmer, gold pearl that is plentiful enough that it gave the gloss a warmer tone overall. It had semi-sheer to medium color payoff that applied fairly evenly. There was just a smidgen of gloss that sat in my deeper lip lines, but it looked smooth from a distance due to the high-shine finish. The gloss was moderately tacky, lasted for four hours, and was lightly moisturizing over time.
The Lipglass formula is supposed to be "pigmented, very shiny and can impart subtle or dramatic color" that can be worn "on its own, over lip pencil or lipstick" and will "condition lips." MAC could use an update on the description as some shades are more pigmented than others but several are sheerer and likely intended to be that way. The formula has a very glossy, high-shine finish with a light-medium weight and moderate tackiness. I find that newer Lipglasses (over the last couple of years) are smoother and not quite as tacky as the formula was many years ago. They wear from three to six hours on me and are usually lightly hydrating. MAC recently updated the shade range and packaging for the range (though the formula was said to be unchanged), so worth noting is that with that packaging change came a reduction in quantity to 0.10 fl. oz. (was 0.17 fl. oz.), which may matter for some but not everyone.
FURTHER READING: Formula Overview, which is a detailed review of the range as a whole.
Our classic Lipglass you adore is getting a makeover! Now in a double-walled clear vial, M∙A∙C Lipglass is chicer than ever. This unique gloss is available in an even bigger batch of colours with 57 over the rainbow shades – all of which provide a high-gloss, glass-like finish or subtle sheen. The pigmented product also features our new Oilshine Moisture Complex – a yummy blend of babassu, coconut, apricot and jojoba oils – to help soften and condition lips.
Hydrogenated polyisobutene, simmondsia chinesis (jojoba) seed oil, octyldodecanol, copernicia cerifera (carnauba) waxcopernicia cerifera ceracire de carnauba, tocopheryl acetate, cocos nuciefera (coconut) oil, orbignya oleifera (babassu) seed oil, prunus armeniaca (apricot) kernel oil, acrylates copolymer, alumina, aluminum calcium sodium silicate, calcium aluminum borosicliate, calcium sodium borosilicate, silica, synthetic fluorphlogopite, tin oxide, polyethylene [+/- Mica, titanium dioxide (CI 77891), Iron Oxides (CI 77491), Iron Oxides (CI 77492), Iron Oxides (CI 77499), Bismoth Oxychloride (CI 77163), Blue 1 Lake (CI 42090), Bronze Powder (CI 77400), Carmine (CI 75470), Copper Powder (CI 77400), Red 6 (CI 15850), (CI 17200), Yellow 5 (CI 19140), Yellow 5 Lake (CI 19140), Yellow 6 Lake (CI 15985)]
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.