Skincare lovers, rejoice! Amazon Prime Big Deal Days are upon us and, as always, the mega-retailer has blessed us with an abundance of impossible-to-pass-up deals—especially in the beauty department. From today, October 7 through tomorrow, October 8, you can shop tons of brands you know and love at killer discounted prices, from the Grande Cosmetics GrandeLash serum (was $68, now $48) to Medicube's viral Collagen Jelly Cream (was $33, now $16). But the October Prime Day markdowns I'm most excited about? The ones included in this massive Sunday Riley sale, which features two of the brand's best sellers at up to 50 percent off. So if you've been wanting to step up your skincare routine, the time is now.
There's a Massive Sunday Riley Sale for October Prime Day—These Are the Top Products to Stock Up On
Good Genes for 50 percent off?!
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Updated Oct 7, 2025
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What Is the Sunday Riley Sale for Prime Big Deal Days?
The Sunday Riley sale for Prime Big Deal Days features four of the brand's cult-fave products marked down by up to 50 percent. (Don't mind that, it's just the sound of me screaming from excitement.) That includes two highly coveted best sellers: the C.E.O. 15% Vitamin C Brightening Serum (was $85, now $51) and the Good Genes All-in-One Lactic Acid Treatment, (was $85, now $43).
To access these incredible deals, you'll need to be a Prime member. Good news: There’s still time to sign up now for a free 30-day trial and unlock these deals, plus so many more benefits like free expedited shipping and Prime’s Try Before You Buy, to name a few.
Now, learn more about two of the best-selling Sunday Riley products on sale for Prime Big Deal Days.
Want to know which buzzy products are *really* worth buying? Sign up for our shopping newsletter to uncover our favorite finds.
1. Sunday Riley C.E.O. 15% Vitamin C Brightening Serum
Sunday Riley
This vitamin C serum gets a stamp of approval from editors and reviews alike. It's formulated with 15 percent vitamin C, a key ingredient that delivers on brightening dark spots, dullness and discoloration. Shoppers say it absorbs quickly, leaves their complexions glowing and is overall great for all skin types. "I've been using this product for several years. I'm 69 years old and I do not shy away from the sun. People comment on the beautiful condition of my skin all the time. I’m not sure if it’s genetics or this product, but the product certainly must help. I highly recommend," shares one customer. This fan favorite is usually $85, and with 40 percent off, you're getting a sweet deal at $51.
2. Sunday Riley Good Genes All-in-One Lactic Acid Treatment
Sunday Riley
If you're looking for instantly softer and smoother skin, you'll want to grab this all-in-one treatment, especially while it's 50 percent off for October Prime Day. With key ingredient lactic acid, it helps to exfoliate and repair skin for improved clarity and radiance. The formula also features arnica and lemongrass to improve skin's texture. As SEO Editor Marissa Wu shared in her review, “The efficacy was amazing, and the lactic acid treatment delivered on everything it promised—hydration, brightening, evening the skin tone, exfoliating, reducing the appearance of pores and fine lines.” Are you sold yet?
Why You Should Trust Us
PureWow's editors and writers have spent more than a decade shopping online, digging through sales and putting our home goods, beauty finds, wellness picks and more through the wringer—all to help you determine which are actually worth your hard-earned cash. From our PureWow100 series (where we rank items on a 100-point scale) to our painstakingly curated lists of fashion, beauty, cooking, home and family picks, you can trust that our recommendations have been thoroughly vetted for function, aesthetics and innovation. Whether you're looking for travel-size hair dryers you can take on-the-go or women’s walking shoes that won’t hurt your feet, we’ve got you covered.
