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.
ο»Ώ
Refillable Hand Soap Dispenser Set - 2Pcs 10.1Oz Press Pump Bottles For Home & Hotel Use
33 Review
Beauticom'S Leak Proof Double Wall Clear Jars With Flat Top Lids - Ideal For Creams, Lotions, Make Up, Powders, And Glitters (12 Pieces, Black Lid)
27 Review
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
38 Review
Beauticom Professional Clear 10 oz Empty Liquid Pumping Dispenser Bottle with No Wording Label
26 Review
Teal Thrill: Sorbus Large Clear Makeup Organizer With Detachable Spacious Beauty Display - Ideal Jewelry & Make Up Storage For Vanity, Dresser & Countertop
42 Review
3Pcs Crystal Clear Cosmetic Bag TSA Air Travel Toiletry Bag Set With Zipper Vinyl PVC Make-Up Pouch Handle Straps For Women Men, Roybens Waterproof Packing Organizer Storage Diaper Pencil Bags
37 Review
Clear Eyeglasses Display Case Sunglasses Organizer Tray Box Tabletop Holder Stand - 5 Layer MineSign Sticker Display
37 Review
Leopard Narwey Hanging Travel Toiletry Bag: Waterproof Cosmetic Make Up Organizer For Women & Girls
37 Review