Ole Henriksen Truth Serum Collagen Booster: Best Price on Amazon
Sold in three sizes with a big spread — the 1oz bottle (on sale) is nearly 4x cheaper per ounce than the tiny 0.25oz.
Category
Serum
Sizes on Amazon
3
Best price
1 fl oz
| Size | Price | Price / oz | ||
|---|---|---|---|---|
| 0.25 fl oz | $37.99 | $151.96/oz | Shop this size → | |
| 0.5 fl oz | $28.99 | $57.98/oz | Shop this size → | |
| 1 fl oz | $40.06 | $40.06/oz | Best Value | Shop this size → |
The best-value size saves about 74% per oz compared to the priciest size.
Prices and stock change on Amazon constantly, and we don't control them — the numbers above were checked directly against live listings in September 2026. Always confirm the current price before you buy; the size math (price per oz) is the durable part, not the exact dollar figures.
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