I change mine out every 3 months for hygienic reasons... there are tons of articles by eye doctors advising you to change out every 3 months b/c the mascara format (wand) is conducive to bacteria growth and you need to protect your eyes. I have mine auto-replenished via Amazon Prime so I just throw the old one away when the new one arrives.

I love L'Oreal Voluminous Millions, too (the waterproof version). My makeup industry experts all tell me that mascara formula is pretty much the same across the board and the big difference is the brush size/style.

Hi, Katherine - Thanks for the kind words. We do include dupes for some really unique polishes like Christian Louboutin Scarabee II and MAC Mean & Green. We haven't yet tackled Deborah Lippmann polishes, but they're on our list! If you're not ready to upgrade your OS and download the app, you can follow us on instagram (@get_superduper) where we post a lot of dupes.

I like your suggestion of a cross-brand color search and will add it to our "big idea" list (which is long, trust me... we want to dupe and catalog the whole makeup universe!)

And, if you do have a chance to use the app, would love to know what you think.

all the best, lk

Hi, @LacquerCritic! I'm the founder of SuperDuper.. thanks for spreading the word! We think dupe accuracy matters tremendously ... what's the point otherwise? To clarify, we do not accept payment for placement in the SuperDuper app, nor do we intend to generate advertising revenue in the cosmetics category. The incentive for companies to send polishes to me is that we'll be sure to test them and include them if they're dupes, but we don't include anything that's not a dupe.. else we'd destroy the whole value prop.

Would love to hear your feedback if you've had a chance to use the app!

thanks, lk