Is magnesium hydroxide powder profitable to sell on Amazon United States?

The niche generates $63K/yr across 8 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -2.0%. Flapen's verdict: Skip it (40/100).

How competitive is the magnesium hydroxide powder niche?

7 brands and 17 sellers compete. The top 5 products take 91% of clicks and top 5 brands hold 95% of demand.

What do buyers complain about in magnesium hydroxide powder?

Top complaints mined from reviews: Magnesium, Advertised Vs Actual Product, Quality-Overall. The return rate is 0.0%.

What does it cost to enter the magnesium hydroxide powder niche?

Listings span $9.58–$25.59; the average listing price is $14.61 (sweet spot $15–$100). The average incumbent carries 1,180 reviews — the moat a new listing must climb.

Magnesium Hydroxide Powder

Skip it

A concentrated shelf (top 5 take 91% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Conversion

Great11.9%

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

Avg price

Good$14.61

avg listing price — sweet spot $15–$100

Price range

Good$9.58–$25.59

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

Review moat

Good1,179.88

avg incumbent reviews — the moat a new listing must climb

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Growth

Bad-2.0%

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

Market size

Bad$63K

$63K/yr · 36K searches

Brand share

Bad95%

top-5 brand share — brand-locked demand

Competition

Bad91%

top-5 click share — a locked-up shelf

Is magnesium hydroxide powder profitable on Amazon?

According to Flapen's Amazon United States niche tracking, magnesium hydroxide powder is a $63K/yr Amazon United States market (36K searches/yr). The top 5 brands hold 95% of demand. Verdict: Skip it — 40/100.

Data updated Jul 28, 2026 · scored weekly · How we score niches

magnesium hydroxide powder market size & sales

Units sold, revenue, conversion and listing quality across the tracked shelf.

Units sold / yr: 3K–4K; avg 250–500/product
Revenue / yr: $44K–$58K; units × avg price
Conversion rate: 11.9%
Avg BSR: #1,167
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 0.8%
Avg brand age: 70 months
Avg seller age: 189 days

Competition: brands, sellers & click share

The top 5 products capture 91% of clicks — a locked-up shelf that new listings rarely crack.

Brands

7 flat

Sellers

Top-5 brand share

95%

Top 20: 100%

Top-5 click share

91%

Top 20: 100%

Open market

BulkSupplements31%
Herbs Botanica28%
mGanna18%
Best Naturals15%
Evolviing Roots4%
NOW Foods3%
Open — no brand owns it (1 brand, 3%)

magnesium hydroxide powder demand & seasonality

Weekly Amazon search volume, last 22 weeks — -2.0% search growth over the last 90 days.

Open Trend

Top magnesium hydroxide powder products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

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

Top sellers

by 90-day click share

Herbs Botanica Magnesium Hydroxide Powder 8 oz Fine Powdered Magnesium for DIY Use Deodorant Toothpaste and Crafting Ozonated Magnesium Oxide Alternative

Herbs Botanica$11.544.5★106 rev

BulkSupplements.com Magnesium Hydroxide Powder - Magnesium Hydroxide Supplement - Food Grade & Gluten Free 1g per Serving 500g (1.1 lbs) (Pack of 1)

BulkSupplements$18.924.7★1,508 rev

mGanna Magnesium Hydroxide Powder 227 GMS / 0.5 lbs

mGanna$11.274.5★86 rev

Best Naturals Magnesium Hydroxide Powder - 380mg of Elemental Magnesium per Serving - 454 Servings per Cotainer - 1 Pound

Best Naturals$14.694.6★288 rev

Evolviing Roots Magnesium Hydroxide Powder 8 oz (227g / 1/2 lb) Fine Cosmetic Grade Mineral Powder for DIY Personal Care Deodorant Formulas Toothpaste Face Masks & External Use Applications

Evolviing Roots$9.584.6★4 rev

Newest

by launch date

Evolviing Roots Magnesium Hydroxide Powder 8 oz (227g / 1/2 lb) Fine Cosmetic Grade Mineral Powder for DIY Personal Care Deodorant Formulas Toothpaste Face Masks & External Use Applications

Evolviing Roots$9.584 rev

2mo ago

Vitamatic Magnesium Oxide Powder 1000 mg Per Serving 250 Servings High Absorption Magnesium Supplement 600 mg Elemental Magnesium Unflavored

Vitamatic$9.9744 rev

1y ago

Herbs Botanica Magnesium Hydroxide Powder 8 oz Fine Powdered Magnesium for DIY Use Deodorant Toothpaste and Crafting Ozonated Magnesium Oxide Alternative

Herbs Botanica$11.54106 rev

1y ago

mGanna Magnesium Hydroxide Powder 227 GMS / 0.5 lbs

mGanna$11.2786 rev

2y ago

Best Naturals Magnesium Hydroxide Powder - 380mg of Elemental Magnesium per Serving - 454 Servings per Cotainer - 1 Pound

Best Naturals$14.69288 rev

3y ago

What reviews say buyers love and hate about magnesium hydroxide powder

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

What buyers love

Quality-Overall19%

“Zero complaints”

Value For Money12%

“it's so worth it”

Muscle Pain Relief7%

“Helps fantastically with muscle soreness from working out”

Advertised Vs Actual Product7%

“it worked exactly as expected”

Efficiency6%

“Functional Performance:”

Ease Of Use6%

“Ease of use”

Magnesium6%

“com Magnesium Hydroxide 5 stars because its simple, clean, and does exactly what I need it to do”

Solubility4%

“The solubility is consistent”

Durability3%

“Last”

Ingredients-Overall3%

“this is ultimately a specialty ingredient that requires some knowledge”

What buyers complain about

Magnesium19%

“Very disappointed, the bottle came opened and the magnesium was all over”

Advertised Vs Actual Product17%

“Misleading description”

Quality-Overall11%

“bad quality”

Allergies8%

“My son has autoimmune disorders which cause his skin to feel like it is burning like he has a bad sunburn”

Hard Feel8%

“Shake hard”

Regulates Digestion4%

“beware dont go anywhere after digesting”

Contamination3%

“its gotten harder to find it without added ingredients that contaminate the process”

Ingredients-Overall3%

“its gotten harder to find it without added ingredients that contaminate the process”

Smell3%

“smelled chemical like”

Sleep Quality3%

“I don't sleep well on a normal day so I can't say if this helped any”

Top return reasons

Smell50%

Advertised Vs Actual Product50%

Common magnesium hydroxide powder questions

Is magnesium hydroxide powder profitable to sell on Amazon United States?: The niche generates $63K/yr across 8 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -2.0%. Flapen's verdict: Skip it (40/100).
How competitive is the magnesium hydroxide powder niche?: 7 brands and 17 sellers compete. The top 5 products take 91% of clicks and top 5 brands hold 95% of demand.
What do buyers complain about in magnesium hydroxide powder?: Top complaints mined from reviews: Magnesium, Advertised Vs Actual Product, Quality-Overall. The return rate is 0.0%.
What does it cost to enter the magnesium hydroxide powder niche?: Listings span $9.58–$25.59; the average listing price is $14.61 (sweet spot $15–$100). The average incumbent carries 1,180 reviews — the moat a new listing must climb.