NEW YORK, Oct. 2, 2026 /PRNewswire/ — Fall skincare resets are in full swing, and COSRX is giving shoppers a reason to refresh their routines during Amazon Prime Big Deal Days, October 6–7. For two days, the global derma beauty brand will offer some of its strongest savings of the season across longtime bestsellers and newer formulas spanning Snail Mucin, Peptides, PDRN, Exosomes and Ceramides.

The event also offers an opportunity to replenish some of the brand’s most recognized essentials. The cult-favorite Advanced Snail 96 Mucin Power Essence and Advanced Snail 92 All In One Cream will each be 41% off, while The 6 Peptide Skin Booster Serum will be 36% off.

At the same time, the lineup gives shoppers room to go beyond their regular staples and explore newer formulas across some of COSRX’s key skincare categories.

“Prime Big Deal Days is one of those moments when our customers can replenish the COSRX products they already rely on while adding something new to their routines,” said a COSRX spokesperson. “For fall, we’re especially focused on hydration, skin barrier care and Peptide-powered skincare—bringing together proven COSRX favorites with newer formulas that reflect what our community is looking for now.”

The COSRX Products Worth Stocking Up on This Prime Big Deal Days

1. The Blue Peptide Bakuchiol Plump Glow Serum — 26% Off
   As temperatures drop and routines become more hydration-focused, The Blue Peptide Bakuchiol Plump Glow Serum offers an easy way to layer moisture and anti-aging care into the same step. Built on COSRX’s Peptide expertise, the serum pairs Copper Tripeptide-1 with Bakuchiol to target the appearance of elasticity, fine lines and loss of firmness while leaving skin looking hydrated, plump and luminous. Its firming and plumping focus also make it relevant for skin that appears less resilient or more depleted after periods of stress, including changes associated with weight fluctuation. For those looking to anchor their routine with one key healthy-aging product, the serum offers a versatile year-round option that layers easily into more hydration-focused fall and winter routines.
2. PDRN EXOSOME Skinplaning Glaze Mask — 20% Off
   The TikTok viral PDRN EXOSOME Skinplaning Glaze Mask combines PDRN with Exosomes in a cream-to-film format designed to boost hydration, firmness and glow. As it dries, the formula turns into a peel-off glaze with a subtle pearlescent sheen, leaving skin looking smoother, plumper and more luminous, even after just one use.
3. The Ceramide Skin Barrier Moisturizer — 30% Off
   The transition into colder weather often comes with a shift in skincare priorities and barrier care moves to the top of the list. The Ceramide Skin Barrier Moisturizer combines Ceramides with Panthenol and Hyaluronic acid to help replenish hydration and support the skin barrier, making it an easy seasonal switch for skin that starts to feel drier, tighter or more sensitive as temperatures fall.
4. New COSRX Peptide Sets — Up to 33% Off
   Prime Big Deal Days also arrive just as holiday shopping starts to pick up, giving COSRX fans an early opportunity to shop for the brand’s new peptide-focused value sets.
   The Glow Boosting Peptide Trio will be available at 33% off, while the Peptide Bounce and Glow Giftset will be 30% off, bringing multiple Peptide skincare products together in value-driven formats suited for gifting—or simply building out a more complete Peptide routine.
5. One Step Original Toner Pads — 30% Off
   For shoppers who prefer to tailor their routines to specific skin concerns, COSRX’s One Step Original Toner Pad collection offers four options addressing concerns ranging from pores and texture to hydration, calming and visible firmness. During Prime Big Deal Days, the toner pads will be 30% off, with an additional 10% off when shoppers purchase two or more qualifying toner pads. The mix-and-match promotion allows shoppers to build a routine around different skin needs rather than committing to a single concern.

From replenishing everyday staples to exploring newer formulas built around Peptides, PDRN and barrier-supporting ingredients, COSRX’s Prime Big Deal Days lineup brings together products for a wide range of fall skincare needs. With savings across both established favorites and newer additions, the two-day event offers an opportunity to refresh routines ahead of the colder months—and get an early start on holiday beauty shopping.

About COSRX

Rooted in science and driven by consumer needs, COSRX is a global skincare and beauty brand known for effective, accessible formulations developed around carefully selected ingredients and real skin concerns. Through ingredient-led innovation and targeted solutions, COSRX creates high-performance skincare that is easy to understand and incorporate into everyday routines.

COSRX products are available through COSRX.com, Amazon, ULTA, Revolve, Dermstore, Nordstrom and Target. COSRX is also on Instagram and TikTok.

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SOURCE COSRX