In the past 30 days, of the 550 products that graced Amazon's ($AMZN) top-100 sellers for its "Tools & Home Improvement" category, 249, or 45%, were face masks.

Amazon recently lifted restrictions on the sale of face masks to the general public. After supply concerns and opportunistic sellers created scarcity and price gouging conditions for face masks, paired with concern over shortages of personal protective equipment for hospital workers, Amazon limited the sale of face masks to medical professionals. 

But that restriction was lifted, and Amazon shopping flocked to put masks in their shopping carts. 

Every day, Amazon published a top-100 sales-rank list for each of its 30-odd categories. In the past 30 days, 550 unique items have been on that daily list. Of those 550, 249 were face masks of some sort.

The top-20 of those are included below along with the average sales rank in the past 30 days along with the number of days it hit the best-seller list.

Name

Avg Rank

Days ranked past month

Yoodelife Cotton Mouth Mask Anti Dust Mouth Mask, Unisex Face Mask Reusable Fashion Mask Anime Face Mask Washable Mask Reusable Mask for Cycling Camping Travel for Adults, Black - 3 Pack

35.7

20

Medical Mask Disposable Face Mask (Blue-30Pcs) Earloop Mouth Mask, Comfortable Sanitary Surgical Mask for Dust, Protection and Personal Health Professional 3-Layer Anti Dust Breathable

32.9

19

PM2.5 Replaceable Filters with 5 Activated Carbon Layers Anti Haze for Face Mask Insided with Filter Slot Health Protection(20pcs)

22.5

19

TATUBE 50Pcs Mouth, Disposable Face Mask for Unisex Outdoor, Protection Anti Dust Mask

30.9

14

Seekay 10pcs PM2.5 Activated Carbon Filter Replaceable Anti Haze Filter Paper for Mask

39.4

14

Disposable Respirator-Three Layers - Melt-Blown Fabric（50PCS）

26.9

13

50Pcs Face Mask, Disposable Face Masks, 3-Ply Face Masks Protective for Smoke, Dust, Pollen, etc,

30.9

12

Blue Pleated Anti-Fog Dual Fit Tie-on Face Mask - Diffuser 50/Box

44.3

12

Cotton Mouth Mask Anti Dust Mouth Mask,UNIME Unisex Black Face Mask Reusable Fashion Mask Anime Face Mask Washable Mask Reusable Mask for Cycling Camping Travel for Adults Men Women

53.9

12

Karc Safety Face Shield, 5 Pcs Reusable Adjustable Transparent Full Face Anti-spitting Protective Mask Hat Protect Eyes and Face Anti Drool Splash-Proof Facial Cover Men Women

57.3

12

CHRISLZ 30 PCS PM2.5 Activated Carbon Filter Mouth Masks 5 Layer Protective Filter Mask Filter

17.3

12

La Volupte 20Pcs PM2.5 Activated Carbon Filter Breathing for Mask

20.2

12

2 Pack Dust Mask - Anti Air Pollution Smoke Mask - Reusable Face Mask, Adjustable PM2.5 Air Filter Mask, Activated Carbon Dustproof Sport Mask for Outdoor（Black）

42.7

12

Earloop Face Mask, Sanitary Surgical Face Shields, Dust Mask, Blue (50)

70.1

11

Seekay 10Pcs PM2.5 Activated Carbon Filter 5 Layer Replacement Protective Filter for Mask

16.6

11

Disposable Face Masks - 50 PCS - For Home & Office - 3-Ply Breathable & Comfortable Filter Safety Mask

31.3

11

SmleGft Face Mask - 5 Pack Unisex Dust Mask with 3 Layers of Space Cotton - Washable & Reusable - Protection from Dust, Pollen, Pet Dander, Other Air Pollution - Earloop face mask for Men Women Kids

26.2

11

Dust Masks, UBRU Reusable Dust Mask for Woodworking Running Sanding Mowing Half Mask for Women Men Black

19.0

11

SALUTE 50pcs Face Masks Disposable 3 Layers Dustproof Mask Facial Protective Cover Masks Set Anti-Dust - Blue

47.7

11

Spedol 2 Pack Unisex Black Mouth Mask Dust Reusable Activated Carbon Filter Respirator Cotton Face Mask (C02-2Pack Black)…

51.2

10

The best-selling mask of the past 30 days was the "Yoodelife Cotton Mouth Mask Anti Dust Mouth Mask, Unisex Face Mask Reusable Fashion Mask Anime Face Mask Washable Mask Reusable Mask for Cycling Camping Travel for Adults, Black - 3 Pack" by far, with an average sales rank of 35.7 over 20 of those days.

"Medical Mask Disposable Face Mask (Blue-30Pcs) Earloop Mouth Mask, Comfortable Sanitary Surgical Mask for Dust, Protection and Personal Health Professional 3-Layer Anti Dust Breathable" was also popular with an average rank of 32.9 over 19 of the past 30 days.

The overall average sales rank for items containing the phrase "Mask" in them at Amazon, across all categories, has risen in the past 30 days. Now that states and local areas are requiring that people wear face coverings when outside, this trend will likely continue, at least as long as supplies remain plentiful.

About the Data:

Thinknum tracks companies using the information they post online - jobs, social and web traffic, product sales, and app ratings - and creates data sets that measure factors like hiring, revenue, and foot traffic. Data sets may not be fully comprehensive (they only account for what is available on the web), but they can be used to gauge performance factors like staffing and sales. 

Further Reading: