Is vitamin c serum korean profitable to sell on Amazon United States?

The niche generates $718K/yr across 6 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is +7.1%. Flapen's verdict: Skip it (48/100).

How competitive is the vitamin c serum korean niche?

2 brands and 13 sellers compete. The top 5 products take 97% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in vitamin c serum korean?

Top complaints mined from reviews: Allergies, Functionality-Overall, Symptom Reduction. The return rate is 0.9%.

When does demand for vitamin c serum korean peak?

Demand peaks in Jan–Feb–Mar–Oct–Nov–Dec; the busiest month runs 3.5× the quietest.

What does it cost to enter the vitamin c serum korean niche?

Listings span $18.36–$28.74; the average listing price is $22.58 (sweet spot $15–$100). The average incumbent carries 3,165 reviews — the moat a new listing must climb.

vitamin c serum korean

Skip it

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.9%

return rate — above 5% kills the launch gate

Price range

Incredible$18.36–$28.74

cheapest to priciest tracked listing — scored on the share inside $15–$100

Avg price

Great$22.58

avg listing price — sweet spot $15–$100

Conversion

Great7.6%

search→purchase rate — share of searches ending in a sale

Market size

Good$718K

$718K/yr · 420K searches

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Growth

Okay+7.1%

90-day search growth — must beat 0% to launch

Review moat

Okay3,164.83

avg incumbent reviews — the moat a new listing must climb

Competition

Bad97%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, vitamin c serum korean is a $718K/yr Amazon United States market (420K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan–Feb–Mar–Oct–Nov–Dec. Verdict: Skip it — 48/100.

Data updated Jul 16, 2026 · scored weekly · How we score niches

vitamin c serum korean market data

Units sold / yr: 30K–40K; avg 6,000–8,000/product
Revenue / yr: $677K–$903K; units × avg price
Conversion rate: 7.6%
Avg BSR: #361
Page quality: 0%
Prime: 100%
Sponsored: 50%
Out of stock: 32.3%
Avg brand age: 53 months
Avg seller age: 126 days

Competition & brand share

The top 5 products capture 97% of clicks — a locked-up shelf that new listings rarely crack.

Brands

2 flat

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

97%

Top 20: 100%

Open market

Dr.Althea56%
GOODAL44%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +7.1% search growth over the last 90 days.

Peak months: Jan, Feb, Mar, Oct, Nov, Dec · busiest ÷ quietest = 3.5×

Open Trend

Top vitamin c serum korean search terms

dr althea vitamin c154K/yr +0.0%5.8% conv.
goodal vitamin c serum61K/yr +0.8%8.6% conv.
goodal green tangerine vita c dark spot serum26K/yr +34.8%7.9% conv.
goodal vitamin c17K/yr +14.3%8.5% conv.
dr althea vitamin c serum18K/yr +33.2%5.5% conv.
vitamin c korean21K/yr -5.1%0.9% conv.
vitamina c dr althea11K/yr +59.6%2.2% conv.
goodall vitamin c serum13K/yr +39.5%9.6% conv.
green tangerine vita c dark spot serum17K/yr -4.7%8.2% conv.
vitamin c dr althea9K/yr +40.3%5.1% conv.

All search terms

Top vitamin c serum korean products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 6 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Dr.Althea Vitamin C Boosting Serum | Tranexamic acid (TXA) & Niacinamide to Helps Remove Dark Spots & Uneven Skin Tone | Daily Face Serum for All Skin Types | Korean Vegan Skin Care

Dr.Althea$20.794.6★3,105 rev

GOODAL$18.534.5★5,209 rev

GOODAL Green Tangerine Vitamin C Cream [Advanced Ver.] Vitamin C Cream with 5% Niacinamide | Fades Dark Spots Boosts Radiance & Hydrates | Korean Skincare 1.69oz / 50ml

GOODAL$18.364.5★1,321 rev

GOODAL Green Tangerine Vita C 15 Ampoule Korean Skin Care Vitamin C Serum Hydrating Daily Facial Care for Fine Lines Dull Skin K Beauty 16g/0.56 Oz

GOODAL$25.704.5★1,040 rev

Dr.Althea Vitamin C Boosting Serum | Daily Vitamin C Serum for All Skin Types | Helps Remove Dark Spots & Uneven Skin Tone | Korean Vegan Skincare (DISCONTINUED)

Dr.Althea$28.744.6★3,105 rev

Newest

by launch date

GOODAL Green Tangerine Vitamin C Cream [Advanced Ver.] Vitamin C Cream with 5% Niacinamide | Fades Dark Spots Boosts Radiance & Hydrates | Korean Skincare 1.69oz / 50ml

GOODAL$18.361,321 rev

6mo ago

GOODAL$18.535,209 rev

6mo ago

GOODAL Green Tangerine Vita C 15 Ampoule Korean Skin Care Vitamin C Serum Hydrating Daily Facial Care for Fine Lines Dull Skin K Beauty 16g/0.56 Oz

GOODAL$23.405,209 rev

1y ago

Dr.Althea Vitamin C Boosting Serum | Tranexamic acid (TXA) & Niacinamide to Helps Remove Dark Spots & Uneven Skin Tone | Daily Face Serum for All Skin Types | Korean Vegan Skin Care

Dr.Althea$20.793,105 rev

1y ago

Dr.Althea Vitamin C Boosting Serum | Daily Vitamin C Serum for All Skin Types | Helps Remove Dark Spots & Uneven Skin Tone | Korean Vegan Skincare (DISCONTINUED)

Dr.Althea$28.743,105 rev

3y ago

What buyers say about vitamin c serum korean

What buyers praise and complain about, mined from review topics.

What buyers love

Suitability Combination Skin28%

“still effective, which is perfect if you have sensitive skin”

Quality-Overall11%

“Top quality serum”

Soft Feel6%

“its very gentle”

Symptom Reduction5%

“it's done an amazing job at lightening said spots”

Brightness/Shine/Glow5%

“makes your skin glow”

Suitability Dry Skin4%

“it also leaves you feeling hydrated”

Weight Light4%

“It's clean lightweight”

Smell4%

“it smells good”

Moist/Dry4%

“my face feel moisturizing”

Value For Money3%

“love the price”

What buyers complain about

Allergies11%

“this item made me break out almost like an allergic reaction”

Functionality-Overall10%

“Didn't do anything for my spots”

Symptom Reduction8%

“I didnt see dramatic brightening or acne changes”

Adhesion/Stickiness8%

“it feels sticky”

Sensitivity-Overall5%

“Not good for my sensitive skin”

Moist/Dry4%

“I dont find it moisturizing”

Skin Health4%

“I think it might be irritating my skin”

Oily/Greasy4%

“it was so GREASY”

Wrinkles3%

“Left me with tiny bumps on my face all the time I used it”

Value For Money3%

“expensive”

Top return reasons

Functionality-Overall13%

Value For Money12%

Advertised Vs Actual Product9%

Smell8%

Suitability Combination Skin5%

Leak-Proof5%

Texture/Consistency-Overall4%