Korean sunscreen sales on Amazon increase roughly 400% between January and June. That is not a typo. The seasonal swing in K-beauty demand is one of the most dramatic patterns in all of Amazon beauty -- and almost nobody talks about it.
We track 900+ Korean beauty brands on Amazon. When you watch that much data over time, the seasonal patterns become impossible to miss. Certain months drive predictable demand spikes. Certain categories follow seasonal curves that repeat year after year. And the brands that align their inventory, advertising, and promotions to these patterns consistently outperform those that treat every month the same.
Whether you are a brand planning your US inventory, a seller allocating advertising budget, or a consumer looking for the best time to buy -- this is the K-beauty seasonal calendar that Amazon does not publish but the data makes clear.
K-Beauty Amazon Demand by Month
The following demand index is based on our tracking of K-beauty sales velocity across categories on Amazon US. A score of 100 represents peak demand. These are relative measures -- actual revenue depends on your category, brand strength, and competitive dynamics.
January: The Reset (Demand Index: 70/100)
January is the quietest month for K-beauty on Amazon. Post-holiday spending fatigue is real, and consumers are recovering from December purchases. But there is a counter-signal worth watching: New Year skincare resolutions. Search volume for terms like "Korean skincare routine" and "best K-beauty routine for beginners" rises in early January as consumers commit to better skincare habits for the year ahead.
For brands, January is an inventory recovery month. Use it to replenish stock depleted during Q4, optimize listings based on holiday season data, and prepare advertising campaigns for the spring ramp. For consumers, January clearance deals on K-beauty gift sets from the holiday season can offer genuine value.
February: Discovery Season (Demand Index: 75/100)
Valentine's Day drives a modest K-beauty sales bump, primarily through gift sets and curated bundles. But the more interesting dynamic in February is discovery purchasing. Consumers who made skincare resolutions in January are now researching specific products and brands. This is when "best Korean toner" and "COSRX vs Beauty of Joseon" comparison searches peak.
Sheet mask variety packs and K-beauty starter kits perform particularly well as Valentine's gifts. Brands with gift-ready packaging or bundle offers see disproportionate lift in the first two weeks of February.
March: The Spring Transition (Demand Index: 85/100)
March marks a meaningful inflection point. Winter is ending, and consumers begin transitioning their skincare routines for warmer weather. Lightweight moisturizers, gel creams, and -- critically -- sunscreens begin their seasonal climb.
Sunscreen search volume on Amazon starts rising in March and does not stop until June. Korean sunscreen brands that increase advertising spend in March, before competitors ramp up, can capture early demand at lower cost-per-click. This is one of the most actionable timing insights in the entire K-beauty calendar.
For consumers, March is an excellent time to stock up on Korean sunscreens. Prices have not yet been pushed up by peak-season demand, and inventory levels are strong after winter restocking.
April: Acceleration (Demand Index: 90/100)
April is when the K-beauty engine starts running at speed. Sunscreen demand is climbing steeply. Spring Prime-adjacent promotional events -- Amazon regularly runs spring sales events in April -- create traffic spikes across beauty categories.
This is also when oil cleansers and double-cleansing products see increased interest, as consumers wearing more sunscreen need effective removal at the end of the day. The correlation between sunscreen sales and oil cleanser sales is surprisingly consistent in our data.
Brands should have full inventory in place by early April. Running out of stock during the April-July demand ramp is one of the most expensive mistakes a K-beauty brand can make on Amazon -- lost sales are compounded by the organic ranking damage that stockouts cause.
May: Approaching Peak (Demand Index: 95/100)
May brings two powerful demand drivers together: sunscreen approaching its seasonal peak and Mother's Day gift purchasing. K-beauty gift sets, premium serums, and curated skincare bundles sell well in the first two weeks of May. After Mother's Day, the focus shifts entirely to summer preparation.
Korean sunscreens are now in full demand. Brands like Beauty of Joseon, SKIN1004, and Roundlab see their BSR rankings improve dramatically from March levels. Advertising costs also rise -- cost-per-click for sunscreen-related keywords in May is typically 30-50% higher than in February.
June: The Peak (Demand Index: 100/100)
June is peak K-beauty season on Amazon, driven almost entirely by sunscreen. Korean sunscreens dominate the broader Amazon sunscreen category at this point, with multiple K-beauty brands occupying top-25 positions in facial sunscreen bestseller lists.
Beyond sunscreen, summer-weight skincare products -- water-gel moisturizers, lightweight essences, and centella-based soothing products for sun-exposed skin -- all hit seasonal highs.
For brands, June is not the time to start advertising. If you are not already running campaigns by June, you are paying premium prices for attention your competitors captured months earlier. For consumers, June pricing is at its peak. Unless a specific deal appears, you will find better value buying in March or waiting for Prime Day in July.
July: Prime Day Impact (Demand Index: 100/100, with Prime Day Spike)
July matches June's baseline demand and then adds the single most important sales event for K-beauty on Amazon: Prime Day. In recent years, K-beauty has been one of the top-performing beauty subcategories during Prime Day, with brands reporting 3-5x their normal daily sales volume during the event.
Prime Day is when consumers who have been browsing K-beauty all spring finally commit to purchasing. Deal-driven buyers enter the K-beauty market for the first time through deeply discounted bestsellers. For many brands, Prime Day generates more revenue in 48 hours than any other two-week period of the year.
For consumers, Prime Day is unambiguously the best time to buy K-beauty on Amazon. Discounts of 20-35% on popular Korean skincare products are common, and some brands offer exclusive bundles only available during the event.
August: Late Summer Plateau (Demand Index: 85/100)
August sees a notable step down from the June-July peak. Sunscreen demand is still elevated but beginning to decline. Back-to-school shopping redirects consumer attention, though there is a niche "back-to-school skincare" segment -- college-age consumers stocking up on skincare basics for dorm life.
For brands, August is a recalibration month. Review your Prime Day performance data. Adjust advertising budgets downward from summer peak levels. Begin planning fall inventory needs, particularly in moisturizer and treatment categories that will ramp in September.
September: The Fall Pivot (Demand Index: 80/100)
September is the mirror image of March -- a transition month where consumer behavior shifts. Sunscreen demand continues dropping, while richer moisturizers, hydrating serums, and barrier-repair products begin their seasonal rise. Search volume for "Korean moisturizer for dry skin" and "best winter skincare routine" starts climbing.
Brands that pivot their advertising emphasis from sunscreen to winter-weight skincare in September gain early positioning advantages. The brands that keep running sunscreen campaigns into October are wasting budget on declining demand.
October: Fall Event Season (Demand Index: 90/100, Event Spike)
October brings Amazon's Prime Big Deal Days -- the second major sales event of the year. This event has grown significantly since its introduction and is now a meaningful K-beauty sales driver. It also marks the beginning of the holiday shopping season in practical terms, as consumers start early gift purchasing.
Fall skincare products -- heavier creams, sleeping masks, facial oils, and intensive treatments -- are in full demand. Korean brands with strong moisturizer lines see some of their best non-Prime Day sales in October.
November: The Holiday Surge (Demand Index: 95/100)
Black Friday and Cyber Monday make November the second-highest demand month for K-beauty on Amazon after the June-July peak. The nature of the demand is different, though. Summer demand is driven by personal need (you need sunscreen). Holiday demand is driven by gift purchasing. That means gift sets, premium packaging, and curated bundles outperform individual products relative to other months.
Sheet mask variety packs are a particular standout in November. They hit the sweet spot of affordable, giftable, and visually appealing -- exactly what holiday shoppers want. For deeper analysis of overall market dynamics during this period, see our K-Beauty Amazon Trends 2026 report.
December: Holiday Peak and Wind-Down (Demand Index: 90/100)
December demand is strong through roughly the 20th, driven by last-minute holiday gift shopping. K-beauty gift sets and bestselling hero products see elevated sales. After Christmas, demand drops sharply -- though gift card redemptions in late December can create a small secondary bump.
For brands, December is about execution, not strategy. If your inventory is in place and your deals are live, the traffic will come. If you are out of stock on a bestseller in December, you have made a planning error that started months ago.
When Each K-Beauty Category Peaks on Amazon
Not every K-beauty product follows the same seasonal curve. Understanding when your specific category peaks is more valuable than knowing the overall market trend.
Sunscreen: The Strongest Seasonal Pattern
Korean sunscreens show the most dramatic seasonality of any K-beauty category on Amazon. Demand begins rising in March, accelerates through April and May, peaks in June-July, and declines through August-September before reaching a winter low in December-January. The swing from trough to peak is roughly 400%.
This pattern is predictable enough that brands can plan inventory and advertising with unusual precision. Stock heavy for April through August. Pull back advertising on sunscreen keywords after August. Redirect that budget to categories with fall-winter demand.
Moisturizers: The Winter Curve
Moisturizers follow an inverse pattern to sunscreen. Demand rises in September as weather cools, peaks from November through February when cold weather drives dry skin concerns, and settles into a moderate summer baseline.
Korean moisturizers with ingredients like snail mucin, ceramides, and centella asiatica perform especially well during winter months. The "winter hydration" positioning is a natural strength for K-beauty brands, given Korean skincare's reputation for deep hydration.
Serums and Essences: Year-Round Demand
Serums are the most seasonally stable K-beauty category. Demand fluctuates only about 15-20% across the year, with a slight holiday gift bump and a minor summer dip. This stability makes serums a reliable revenue base for brands and a buy-anytime category for consumers.
Sheet Masks: The Gift Season Spike
Sheet masks show relatively flat demand for most of the year, then spike sharply in November and December. The gift-purchasing dynamic is obvious -- sheet masks are affordable, visually attractive, and easy to buy for someone else. Variety packs and holiday-themed sets drive the surge.
Cleansers: Stable with a Summer Edge
Cleansing products show modest seasonality, with a slight summer increase tied to the sunscreen-removal cycle. Oil cleansers and cleansing balms peak alongside sunscreen in June-July. Overall, cleanser demand is steady enough year-round that seasonal planning is less critical than in other categories.
Category Seasonality Summary
| Category | Peak Months | Demand Swing | Key Driver |
|---|---|---|---|
| Sunscreen | June-July | ~400% | UV season + Prime Day |
| Moisturizer | Nov-Feb | ~80% | Cold weather hydration |
| Serum/Essence | Year-round | ~20% | Stable daily use |
| Sheet Mask | Nov-Dec | ~120% | Gift purchasing |
| Cleanser | June-July | ~30% | Sunscreen removal |
| Sleeping Mask | Oct-Feb | ~90% | Winter treatment |
For revenue benchmarks by category regardless of season, see our K-Beauty Amazon Revenue Benchmarks analysis.
Amazon Events That Drive K-Beauty Sales
Three Amazon events create the largest single-day or single-week sales spikes for K-beauty brands. Planning for these events is not optional -- it is foundational to your annual Amazon strategy.
Prime Day (July)
Prime Day is the single biggest K-beauty sales event on Amazon. Korean beauty has become a Prime Day standout category, with multiple brands appearing in Amazon's overall top-selling beauty deals. The event typically runs 48 hours, and brands report 3-5x normal daily sales volume during that window.
Preparation timeline: Begin Prime Day deal submissions 8-10 weeks in advance. Ensure inventory arrives at FBA warehouses at least 4 weeks before the event. Increase advertising budgets 2 weeks prior to capture early browsing traffic. Run Lightning Deals or Best Deals during the event itself.
Prime Big Deal Days (October)
Amazon's fall sales event has gained significant traction since launching in 2023. For K-beauty, it serves a dual purpose: clearing summer inventory (discounted sunscreens) and launching holiday-season products (gift sets, winter skincare). Sales lifts of 2-3x normal daily volume are typical.
The timing makes it a natural gateway to holiday shopping. Consumers who discover a K-beauty brand during October's event often return to purchase gifts in November and December.
Black Friday and Cyber Monday (November)
The five-day stretch from Black Friday through Cyber Monday is the second-largest sales event for K-beauty after Prime Day. Unlike Prime Day, where individual product deals drive sales, Black Friday favors brand-wide promotions and gift sets.
K-beauty brands that offer tiered discounts (10% off one product, 20% off two, 30% off three) consistently outperform single-product discounts during this period. The gift-purchasing mindset makes consumers willing to buy larger orders.
For a comprehensive guide on navigating Amazon as a Korean beauty brand, including event preparation, see our How to Sell Korean Skincare on Amazon guide.
How to Use K-Beauty Seasonal Data
Seasonal patterns are only valuable if they inform specific decisions. Here is how to put this data to work.
For Brands: Inventory Planning
The most expensive mistake a K-beauty brand makes on Amazon is stocking out during peak demand. Use the monthly demand index to build your inventory calendar. Ship sunscreen inventory to FBA warehouses by February for the March-July ramp. Ship moisturizer and gift set inventory by September for the October-December holiday season.
A useful rule of thumb: carry 2.5-3x your average monthly inventory for peak months, and 1.5x for shoulder months. Overstocking is costly. Understocking is more costly.
For Sellers: Advertising Budget Allocation
Stop spending the same advertising budget every month. Allocate 40-50% of your annual ad budget to the April-July window if you sell sunscreen, or the October-December window if you sell moisturizers and gift sets. Reduce spending during off-peak months to 50-60% of your peak-month budget -- maintain visibility without overpaying for low-intent traffic.
Our Best Korean Sunscreens on Amazon analysis shows which products are capturing the most seasonal demand and how they position themselves during peak months.
For Consumers: When the Deals Are Deepest
The best times to buy K-beauty on Amazon are, in order: Prime Day (July), Black Friday/Cyber Monday (November), and Prime Big Deal Days (October). Outside of events, March is the best time to stock up on sunscreen before peak-season pricing kicks in.
If you are flexible on timing, Subscribe & Save offers consistent 5-15% discounts year-round and eliminates the need to time your purchases. For a broader look at the K-beauty landscape on Amazon, see our State of K-Beauty on Amazon Report.
Seasonality Is Strategy
Seasonality is one of the most underutilized data points in K-beauty Amazon strategy. Most brands plan inventory based on gut feel. Most sellers allocate advertising budget evenly across the year. Most consumers buy when they run out rather than when prices are lowest.
The data tells a different story. K-beauty demand on Amazon follows predictable patterns that repeat year after year. The brands that align their operations to these patterns -- stocking before demand rises, advertising before competitors bid up keywords, promoting during the events that drive the most volume -- consistently outperform brands that treat every month the same.
If you are a Korean beauty brand planning your Amazon US strategy, we can help you build an inventory and advertising calendar based on real seasonal data -- not guesswork. Reach out to our team and we will show you what the data says about your category's seasonal curve.