I tested a few by filling them with water and leaving them on their side and upside down for a day and nothing leaked. BUT when I put gel polish in them and traveled with them (the reason I bought them) they leaked all over and made a big mess.
24-Pack Amber 2ML Essential Oil Roller Bottles By ZEJIA With Stainless Steel Roller Balls And 2 Droppers - Mini Glass Roll-On Bottles For Oils
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ZEJIA 100Pcs Blue Makeup Sample Jars With Lids - 5 Gram Cosmetic Containers For Easy Storage
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Segbeauty Refillable Soap Dispenser Set, 4 Pack 6.8oz Press Pump Bottles for 𧴠Travel, Lotion, Hand Wash, Shampoo, Conditioner, Shower Gel, Essential Oil - 200ml Empty Cosmetic Containers
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Refillable Shampoo And Conditioner Dispenser Set - 3 Pack, 10Oz/300Ml Bottles For Bathroom, Kitchen, Or Hotel Use - Brown Color For Enhanced Style And Functionality
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Toiletry Bag, VAGREEZ Upgraded Large Hanging Travel Toiletry Organizer Kit With Heavy-Duty Zippers Waterproof Comestic Bag Dop Kit For Women Men
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Leopard Narwey Hanging Travel Toiletry Bag: Waterproof Cosmetic Make Up Organizer For Women & Girls
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Crystal Clear Cosmetic Bag Set With Zipper, Handle Straps, And Waterproof Features For Stylish And Convenient Packing And Organizing While Traveling By ROYBENS
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Teal Thrill: Sorbus Large Clear Makeup Organizer With Detachable Spacious Beauty Display - Ideal Jewelry & Make Up Storage For Vanity, Dresser & Countertop
42 Review