Zena Liquid Collagen + Biotin 30 fl oz
Item #1416181 · Health & VitaminsNext expected now through Nov 19
The short versionSolid pattern
Goes on sale about every 2 months. Typically $6 off. Next expected now through Nov 19.
Seen on sale 6 times.
Sale timeline
● sale (height = discount)○ unsure reading┆ today▮ predicted window
Full history
| Dates | Discount | Sale price | Source |
|---|---|---|---|
| Jan 26 – Feb 22, 2026 | $6 off | — | Costco February 2026 |
| Oct 20 – Nov 16, 2025 | $6 off | — | Costco November 2025 |
| Aug 25 – Sep 21, 2025 | $6 off | — | Costco September 2025 |
| Jun 18 – Jul 20, 2025 | $6 off | — | Costco July 2025 |
| Mar 5–30, 2025 | $6 off | — | Costco March 2025 |
| Dec 26, 2024 – Jan 20, 2025 | $6 off | — | Costco January 2025 |