It's my job to test mascaras – 11 of my favourites are on sale for Prime Day
If you, too, have a bathroom shelf full of self-proclaimed “best mascaras” that promised fluttery length and instead delivered crispy disappointment, I get it. I’ve been writing about beauty for over five years, and in that time, I’ve tested enough tubes of the stuff to know what’s worth your money (and what belongs in beauty heaven).
That’s why I actually look forward to Amazon Prime Day. Among the endless electric toothbrushes and air fryers on sale, you’ll find some of the greatest mascara formulas to ever grace the high street on serious discount. From Maybelline Lash Sensational Sky High to L'Oreal Paris Million Lashes Panorama mascara, the Lancôme Lash Idôle Waterproof and the criminally underrated Uklash Volume Boost Mascara, some of the best Prime Day beauty deals are in the mascaras category, stat.
I’m talking all up to 50% off.
I've scrolled through the hundreds of pages of Prime Day deals to hunt down discounts of the brown mascaras, waterproof mascaras and every other mascara in between that I've actually tested and loved.
Some of these formulas have racked up tens of thousands of five-star reviews, others have gained cult TikTok status, and another of them is in my basket bag at all times. Prices start at £5. Reader, I’ve paid £30 for a mascara that flaked after lunch – don’t be like me.
Whether you’re into fluttery lashes, lifted lashes, or lashes so dramatic they need their own post code, these are the Prime Day mascara deals worth adding to basket now.
At a glance, my top-five favourite mascaras that are reduced in the Prime Day sale:
- L'Oréal Paris Telescopic Mascara - WAS £10.99 NOW £6.65
- Maybelline New York Lash Sensational Sky High Mascara, WAS £12.99 NOW £5
- L'Oreal Paris Panorama Mascara, WAS £13.12 NOW £7.82
- Lancôme Lash Idôle Waterproof Mascara, WAS £28 NOW £19.60
- Uklash Volume Boost Mascara, WAS £13 NOW £11
How we chose the best Amazon Prime Day mascara deals
As someone who’s been writing about beauty for over five years, I’ve tested more mascaras than I’ve had hot dinners – and I have very strong opinions about what makes a good one. This list combines viral favourites, editor-loved formulas and tried-and-tested mascaras I’ve recommended time and time again.
Every mascara featured here ticks all of the following boxes:
- A cult reputation backed by thousands of five-star reviews
- A Prime Day saving that actually makes it worth buying now
- A wand and formula that delivers - whether that’s sky-high length, lift, volume, curl, or all four
- A personal favourite I’ve reached for again and again (looking at you, Sky High)
Whether you want clean definition, voluminous fluffy lashes or something that won’t smudge by 4pm, there’s a mascara in here that genuinely deserves the hype and the discount. And yes, I’ve sifted through dozens of deals to weed out the duds - because not all Prime Day sales are as good as they seem.
Ahead, the top Amazon Prime Day mascara deals of 2025…
Maybelline New York Lash Sensational Sky High Mascara
Why we love it: This flexible wand and bamboo‑infused formula never fails to let me down. It has more-than earned its TikTok cult status, and is a firm favourite amongst the GLAMOUR team.
Why we love it: This mascara does more than just make your lashes look good - it actually helps nourish them too. Infused with strengthening vitamin E, panthenol (pro-vitamin B5) and castor oil, the formula feels like skincare for your lashes. After two weeks of daily wear, I noticed mine felt softer, looked fuller, and shed less during makeup removal.
L’Oréal Paris Panoramic Mascara
Why we love it: If you love your lashes to look bigger, bolder, and more open without veering into spider-leg territory, Panorama is the one. This mascara delivers instant volume with a soft, fanned-out finish that lifts the whole eye - like caffeine for your lashes.
L’Oréal Paris Telescopic Mascara
Why we love it: With its slender, spike-like wand, this TikTok‑famous formula grabs every lash from root to tip, extending them without clumping.
Why we love it: This is the mascara equivalent of a designer handbag - expensive, but worth every penny. Lancôme’s Lash Idôle is one of the few luxe formulas that actually lives up to the hype. It lifts, fans, and defines with precision, leaving lashes looking glossy, fluttery, and far longer than they actually are.
The secret? A curved, micro-bristle wand with 360 tiny bristles designed to grab even the shortest lashes, plus a gel-emulsion formula that gives structure without stiffness.
Rimmel Lash Accelerator Endless Mascara
Why we love it: Rimmel mascaras are so good for the price, and so when a cult-favourite lands in the Prime Day sale, we're always keen to snap it up. At just £5, this lash-lengthening product is one of the most affordable in Amazon's edit of beauty bargains.
Lancôme Hypnôse Waterproof Mascara
Why we love it: “For beautifully voluminous, non-clumpy lashes, Lancome’s Hypnose mascara deserves its reputation as an icon. It gives pretty, full-looking fluttery lashes that don’t smudge until you remove it gently in the evening."
In fact, it’s our Beauty Editor’s favourite ever mascara (and she’s tried a lot).
Rimmel Thrill Seeker Extreme Mascara
Why we love it: This mascara has serious staying power.
The formula is rich but featherlight, with a mousse-like texture that glides on and builds easily - no clumps, no smudges, and most importantly, no mid-afternoon flaking. The oversized, tapered brush grips every lash, lifting and fanning them out for a bold, fluttery finish that reads more high-end than high street.
Urban Decay Perversion Mascara
Why we love it: This pitch-black, intense formula coated my lashes in one swipe, but its incredibly layerable, meaning it can easily take you from your 9-5 to your post-work night out without clumping or flaking.
Max Factor False Lash Effect Mascara
Why we love it: Think falsies but in a tube. This cult classic pumped up my lashes with serious volume and zero stickiness - no panda eyes, even after a gym‑floor sweat‑sesh. Worth revisiting in a big way during the sale.
Poppy Austin Argan Oil Mascara
Why we love it: With its ultra-soft mascara brush and argan-oil infused formula to enhance lash growth, you're getting more than just a lash-thickener with this product. Plus, its vegan, clean‑beauty formula means you can feel good about the glam.
When is Amazon Prime Day 2025?
Amazon Prime Day 2025 officially kicked off at midnight on Tuesday 8th July and runs until 23:59 on Thursday 11th July. That gives you four days to stock up on beauty MVPs at a discount -including mascaras that lengthen, lift and basically do everything except apply themselves.
What is Amazon Prime Day?
Launched in 2015 to celebrate Amazon’s 20th birthday, Prime Day has grown into the online giant’s most-hyped annual sale. Once a humble 24-hour tech fest, it’s now a multi-day event exclusive to Prime members—serving limited-time deals across everything from smart TVs to smart mascaras.
And while Prime Day is often associated with big-ticket gadgets, the beauty deals quietly slay. Mascaras that rarely ever go on sale (we see you, L’Oréal Telescopic) are now up to 50% off, and many of the best-rated options are under a tenner.
