Known cases / Personal Care / Tresemme
Did Tresemme Keratin Shampoo shrink?
25 → 22 oz −12.0%Size Facts
Before25 oz
After
22 oz
Hidden unit-price rise at same price+13.6%
When2021
CountryUnited States
Evidenceconsumer-advocate report (photo of old/new packages)
Confidencehigh
Source: Mouse Print* — Here We Downsize Again – Summer 2021 (Part 2) (mouseprint.org). Source fetched 2026-10-14. Check the math in the calculator.
What the source says
“The big black bottles of Tresemme shampoo downsized years ago from 32 ounces to just 28. And around 2018, the red bottles of Tresemme Keratin went from 25 ounces to 22 ounces”
Other documented cases
- 🇩🇪 Personal Care · 2024
Numis Med pH 5.5 Waschlotion
1000 → 500 ml −50.0%Source: vzhh.de - 🇩🇪 Personal Care · 2024
Alverde Naturkosmetik Mineral Puder
10 → 5 g −50.0%Source: vzhh.de - 🇩🇪 Personal Care · 2020
Dr. Hauschka Gesichtsöl
30 → 18 ml −40.0%Source: vzhh.de - 🇩🇪 Personal Care · 2020
Rituals Dao Body Scrub
325 → 200 ml −38.5%Source: vzhh.de - 🇩🇪 Personal Care · 2024
Neutrogena Body Lotion Gel Hydro Boost
400 → 250 ml −37.5%Source: vzhh.de - 🇦🇺 Personal Care · 2025
Brut deodorant stick (Woolworths)
75 → 50 g −33.3%Source: theguardian.com