Did Cow Brand Red Box (Akabako) beauty soap bar (Japan) shrink?

Size FactsDid it shrink? Yes
Before90 g
After85 g
−5.6%smaller
Price per 100 g · observed+16.5%Shelf price ¥100 RRP (excl. tax) → ¥110 RRP (excl. tax), as recorded by the source.

Before you paid ¥111 per 100 g; after, ¥129 per 100 g: 16.5% more for the same amount.

How big a cut? The 56th-largest of 56 documented soap, shampoo & body wash cuts; a bigger cut than 9% of all 1,366 cases in the library. See the biggest cuts →

When
2026 · reported 10 Feb 2026
Country
Japan
Brand
Cow Brand
Category
Soap, Shampoo & Body Wash
Source
cow-soap.co.jp

Source and evidence

Cow Brand Soap — notice of content change and RRP revision for the Cow Brand Red Box series (10 Feb 2026) cow-soap.co.jp

Source fetched 2026-10-29.

From shipments on 10 Mar 2026 the bar went from 90 g to 85 g and the suggested price from ¥100 to ¥110 (before tax), about 16% more per gram. Applies to the single bar, 3-pack and 6-pack. The company cited beef tallow and coconut oil costs.

Evidence
Typemanufacturer announcement (price/size notice)
Confidencehigh
Size cut alone, at the old price+5.9%

Check the math in the calculator.

What the source says

“がら内容量変更および価格の改定を実施することといたしました。 今後もお客様にご満足いただける商品提供ができるよう、品質第一主義のもとあらゆる施策に努めてまいりますので、ご理解を賜りますよう何卒お願い申し上げます。 対象商品 カウブランド赤箱1コ カウブランド赤箱3コパック カウブランド赤箱6コ入 内容量変更について ・現容量1箱サイズ90gを85gへ変更 メーカー希望小売価格変更について ・現行1個100円(税抜き)を1個110円(税抜き)へ変更 牛乳石鹸「カウブランド赤箱」シリーズの内容量変更およびメーカー希望小売価格改定のお知らせ よくあるご質問 お客様相談室 ニュースリリース…”

More from Japan: the Japan shrinkflation tracker has all 39 documented cases, sortable and filterable.

Topic guide: shampoo, soap and toothpaste shrinkflation, every documented case in one place, brand by brand.

More soap, shampoo & body wash in Japan

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Cite this case

ShrinkRadar, “Did Cow Brand Red Box (Akabako) beauty soap bar (Japan) shrink? 90 g → 85 g”, https://shrinkradar.com/cases/cow-brand-red-box-akabako-beauty-soap-bar-japan-2026.html, accessed 2026-11-05. Original source: Cow Brand Soap — notice of content change and RRP revision for the Cow Brand Red Box series (10 Feb 2026) (https://www.cow-soap.co.jp/news/news-20260210-001/).

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