The RevenueBerry journal
Notes on identifying the things you love — from a single photo.
Long-form guides, shade-matching tutorials, and designer-bag authentication tips, written alongside the apps that power them.
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8 articles
How to Identify Makeup From a Photo: The 2026 Guide
A definitive guide to identifying any lipstick, foundation, or eyeshadow palette from a single photo — how AI shade matching works, when it's accurate, and what to do when it isn't.
How to Authenticate a Designer Handbag From a Photo (2026 Guide)
The exact signals professional authenticators check — stitching, hardware, lining, date codes, NFC chips — and how AI can flag a fake before you spend thousands on a counterfeit.
Best Foundation Shade Finder Apps in 2026 (Tested & Ranked)
We tested every major foundation shade finder app for 30 days across five skin tones and three undertones. Here is what works, what doesn't, and why most apps still get undertone wrong.
How to Identify a Vintage Designer Bag: Date Codes, Hardware & Era
Date codes, hardware, and silhouette clues that tell you exactly when a designer bag was made — Louis Vuitton, Chanel, Hermès, Gucci, Dior — and whether it is a collectible or a knock-off.
How to Find Lipstick Dupes: The Complete 2026 Guide
A $42 luxury lipstick almost always has a $9 drugstore twin. Here is exactly how to find it — the right way to compare formulas, undertones, finishes, and the best dupe-finder apps in 2026.
How to Read Makeup Ingredients (And Which Ones to Avoid)
Decode any makeup ingredient label in seconds. The 12 ingredients dermatologists watch for, what 'non-comedogenic' actually means, and how to scan an ingredient list with your phone.
Which Designer Bags Hold Their Value in 2026 (Resale Data)
A data-driven look at resale performance across Hermès, Chanel, Louis Vuitton, and Dior — which bags appreciate, which depreciate, and how to spot a future collectible before everyone else does.
How to Spot a Fake Louis Vuitton (And Other Top Brands)
A brand-by-brand counterfeit-spotting guide for Louis Vuitton, Chanel, Gucci, Dior, and Hermès — the exact details fakers get wrong, and how to catch them before you spend thousands.