Dealophant tracks the Amazon price and price-per-unit history for TRESemmé Rich Moisture Hydrating Shampoo for Dry Hair 39 oz, so you can see today's price against its tracked 90-day low and high.
Over the last 90 days, the tracked price per unit for TRESemmé Rich Moisture Hydrating Shampoo for Dry Hair 39 oz ranged from $0.20 to $0.20 (average $0.20), across 23 captured data points since 2026-06-30. Dealophant records the real cost per unit, not the sticker price, so you can tell whether a "deal" is actually cheap per ounce, sheet, load, or count.
At $0.20 per unit, this is running about 2% above its 90-day low of $0.20 (tracked high $0.20). It has been cheaper per unit in the last 90 days.
See more products at or near their 90-day low on recently lowest, or compare prices per unit across 50+ categories. Check the current listing on Amazon.