The Under-$50 Prime Day Deals to Shop Before Midnight, Including Crest 3D Whitestrips

As a shopping writer, Prime Day is one of the busiest weeks of the year for both my job and my cart, and honestly, I wouldn't have it any other way. As always, the October deals span must haves from every category — fashion, beauty, home, fitness, sex, you name it — making it the perfect time to cross just about anything off your shopping list. And hey, if you're feeling especially on top of things, it's not a bad time to get a head start on holiday gifting either. To find the best deals, I looked for discounts over 20 percent and paid special attention to items I've personally tried or my fellow Popsugar editors reviewed themselves. Here's a peek at the best under-$50 Prime Day deals I've got my eye on before the clock runs out: In This Post: Prime Day Deals Under $25 Prime Day Deals Under $50 Our Favorite Amazon Prime Day 2025 Deals Under $25 A cozy crewneck: Hanes Crewneck EcoSmart Fleece Pullover at $9, originally $21 A long-lasting mascara: Maybelline Lash Sensational Firework Washable Mascara at $10, originally $15 Jennifer Aniston's daily collagen powder must have: Vital Proteins Collagen Peptides Powder at $12, originally $15 An incredibly useful handheld frother perfect for foamy beverages: Zulay Milk Frother at $10, originally $18 Our Favorite Amazon Prime Day 2025 Deals Under $50 One of the most popular beverage tumblers to ever exist: Stanley Quencher H2.0 Tumbler at $31, originally $45 Editor-favorite whitening strips: Crest 3D Whitestrips Professional Effects at $30, originally $46 The best-selling hair tool that always goes viral: Revlon One-Step Volumizer Plus Blow-Dryer Brush at $40, originally $49 A TikTok-viral straightening brush: Tymo Ring Hair Straightener Brush at $40, originally $60

Looking for even more sales? Shop more of Popsugar's editor-curated Amazon Prime Day sale picks and subscribe to our newsletter for more shopping recommendations. Plus, make sure you sign up for Amazon Prime so that you don't miss a moment of the sale.

Update on Oct. 8, 2025 at 7:15 PM ET: I made sure all of our Amazon Prime Day picks under $50 are in stock and still on sale, and I added more amazing Prime Day deals I can't gatekeep, including a Boy Smells candle and the editor-loved Avène XeraCalm A.D Lipid-Replenishing Cream.