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Quick picks
| # | Product | Best for | Key spec | Price |
|---|---|---|---|---|
| 1 |  Charlie's Soap Laundry PowderBest overall | Detergent that rinses completely out | Form: Powder | Check price on Amazon #ad How we are funded · Prices checked September 23, 2026 |
| 2 |  Tide Free & Gentle Liquid Laundry DetergentBest for cold water | Cold-water washing | Form: Liquid | Check price on Amazon #ad How we are funded · Prices checked September 23, 2026 |
| 3 |  OxiClean White Revive Laundry WhitenerBest whitener | Keeping white towels white | Type: Oxygen bleach (sodium percarbonate based) | Check price on Amazon #ad How we are funded · Prices checked September 23, 2026 |
| 4 |  Arm & Hammer Super Washing SodaBest hard-water booster | Hard water and greasy build-up | Type: Sodium carbonate (washing soda) | Check price on Amazon #ad How we are funded · Prices checked September 23, 2026 |
| 5 |  20 Mule Team Borax Laundry BoosterBest for musty towels | Musty smell, specifically | Type: Sodium tetraborate (borax) mineral booster | Check price on Amazon #ad How we are funded · Prices checked September 23, 2026 |
| 6 |  Molly's Suds Oxygen WhitenerBest fragrance-free whitener | Fragrance-free oxygen bleach | Type: Oxygen bleach powder | Check price on Amazon #ad How we are funded · Prices checked September 23, 2026 |
Rows link through to the full write-up. Prices open on the retailer's site.
The best detergent for towels is whichever rinses most completely out of the pile. Residue is what blocks absorbency, so a low-dose, low-suds, fully-rinsing detergent plus an alkaline booster beats a stronger detergent every time.
Detergent marketing is about cleaning power. For towels, that is the wrong variable. A towel load is lightly soiled with body oil, and the risk is not that the detergent fails to clean -- it is that it does not leave.
How we chose
- Does it rinse out? Low-suds, low-dose formulations rinse more completely. This is weighted above everything.
- Does it dissolve at the temperature you wash at? Powders are excellent at 104F (40C) and up, and poor in a cold wash.
- Does it leave fragrance behind? Perfume that lingers in a towel is residue you can smell. Some people want it; it is still residue.
- Is it the right tool for the job? Whiteness, odor and hard water are three different problems and they want three different products.
Best overall: Charlie's Soap Laundry Powder
Four ingredients, washing-soda based, fragrance free, EPA Safer Choice certified, and one tablespoon per load. It produces no suds -- which looks wrong the first time and is exactly what you want, because suds are what carry residue to the bottom of the load.
The dosing is the real feature. A tablespoon per load makes it inexpensive per wash despite the price on the box, and there is very little there to be left behind.
The one caveat is honest: powder does not dissolve well in a cold-only wash. If you wash cold, buy a liquid.
Best for cold water: Tide Free & Gentle
Dye free, perfume free, and a liquid, so it dissolves properly at low temperatures. No dyes means nothing to build up in white towels over years of washing.
Liquid is easier to over-dose than powder, and over-dosing is precisely what coats a towel. Use about half what the cap suggests.
Best whitener: OxiClean White Revive
Oxygen bleach, which lifts soil and the gray cast without attacking the cotton the way chlorine does. It can go in every white load indefinitely -- unlike chlorine, where every use is a withdrawal from the towel's lifespan.
It needs warm water to activate. In a cold wash, sodium percarbonate does very little. The full comparison with chlorine.
Best hard-water booster: Arm & Hammer Super Washing Soda
Sodium carbonate -- a stronger alkali than baking soda. It softens hard water by binding calcium and magnesium so they rinse away rather than depositing in the pile, and it saponifies body oil so detergent can carry it off.
If your towels went stiff and no amount of softener fixed it, this is the thing to try. It is strongly alkaline, so wear gloves and do not confuse it with baking soda -- they are not the same product.
Best for musty towels: 20 Mule Team Borax
Borax neutralizes odor by stripping the body oil that the odor bacteria live on, which is why it works where a scented booster only masks. It is the specific tool for a towel that smells rather than a towel that is gray.
Cheap, and a box lasts a very long time. Keep it away from children and pets -- it is a mineral, not a food product.
Best fragrance-free whitener: Molly's Suds Oxygen Whitener
The same percarbonate chemistry with nothing added for scent, formulated for sensitive skin. If towels touch reactive skin daily, this is a sensible premium to pay; if fragrance is not a concern, the mainstream oxygen bleaches do the identical job for less.
How to combine them
| Load | Detergent | Booster |
|---|---|---|
| White towels, weekly | Half dose | Oxygen bleach |
| Colored towels, weekly | Half dose | Washing soda if water is hard |
| Towels that smell | Half dose | Borax plus washing soda |
| Towels that are stiff | None | Washing soda, then a vinegar rinse (separate cycle) |
| A full strip | 1 tablespoon | Washing soda plus borax, 4-hour soak |
What to never put in a towel load
Fabric softener and dryer sheets. Both deposit a water-repellent film on the fiber, which is the single most common reason towels stop absorbing. If you want softness, use wool dryer balls -- they work mechanically and leave nothing behind. Here is what softener actually does.
The picks in full
Best overall
Charlie's Soap Laundry Powder
Charlie's Soap
A four-ingredient, washing-soda-based powder that produces no suds and rinses clean -- which is the single property that matters for towels.
| Form | Powder |
|---|---|
| Base | Washing soda (sodium carbonate) |
| Ingredients | Four |
| Dose | 1 tablespoon per load |
| Certification | EPA Safer Choice |
| Fragrance | None |
#ad How we are funded · Prices checked September 23, 2026
What we like
- Rinses out completely, so it does not build up in the pile and block absorbency
- No suds means no residue at the bottom of the load
- One tablespoon per load makes it cheap per wash despite the price on the box
What we do not
- No fragrance, which people used to scented detergent read as 'not clean'
- Powder does not dissolve well in a cold-only wash
How it holds up
Detergent residue, not wear, is the usual reason towels stop absorbing. A low-dose, low-suds, fully-rinsing detergent is the cheapest fix for that and the one most people never try.
Who should skip it
Skip it if you wash exclusively on cold. Use a liquid that dissolves at low temperatures instead.
Specifications from Charlie's Soap laundry detergent product range.
Best for cold water
Tide Free & Gentle Liquid Laundry Detergent
Tide
A dye-free, perfume-free liquid with full Tide cleaning power -- the practical choice if your towel washes run cold.
| Form | Liquid |
|---|---|
| Fragrance | None |
| Dyes | None |
| Skin | Hypoallergenic formulation |
#ad How we are funded · Prices checked September 23, 2026
What we like
- Dissolves properly in cold water, which powders often do not
- No dyes to build up in white towels over years of washing
What we do not
- Liquid detergents are easier to over-dose, and over-dosing is what coats a towel
- More expensive per load than a concentrated powder
How it holds up
The enemy of an absorbent towel is anything left behind in the pile. Free-and-clear formulas carry less to leave behind, but the dose still has to be right -- use half what the cap suggests.
Who should skip it
Skip it if you already run a powder successfully on warm. There is no benefit to switching.
Specifications from Tide Free & Gentle, compared in the towel detergent survey.
Best whitener
OxiClean White Revive Laundry Whitener
OxiClean
An oxygen-bleach whitener the brand claims whitens 40% better per load than chlorine bleach -- and, unlike chlorine, it does not attack the cotton.
| Type | Oxygen bleach (sodium percarbonate based) |
|---|---|
| Use | Per-load whitener and booster |
| Safe on | Colors and whites |
#ad How we are funded · Prices checked September 23, 2026
What we like
- Oxygen bleach can be used on towels every wash without weakening the fibers
- Works on the gray cast that builds up on white towels, which detergent alone does not touch
What we do not
- Needs warm water to activate properly -- it does very little in a cold wash
- Slower than chlorine bleach, so it needs a long wash or a soak
How it holds up
This is the most important product on this page for towel lifespan. Chlorine bleach whitens by attacking the cotton itself, which is why bleached towels thin and tear at the hem. Oxygen bleach lifts the soil instead and leaves the fiber alone.
Who should skip it
Skip it if you only ever wash cold and will not run a warm cycle. It will not activate.
Specifications from OxiClean White Revive, cited in the oxygen bleach comparison.
Best hard-water booster
Arm & Hammer Super Washing Soda
Arm & Hammer
Sodium carbonate -- a stronger alkali than baking soda that boosts detergent performance and is the standard answer for greasy, hard-water-stiffened towels.
| Type | Sodium carbonate (washing soda) |
|---|---|
| Use | Detergent booster and water softener |
#ad How we are funded · Prices checked September 23, 2026
What we like
- Softens hard water, which is the actual cause of stiff towels in most of the country
- The recommended booster specifically for grease and towels
- Costs almost nothing per wash
What we do not
- Strongly alkaline -- wear gloves, and do not confuse it with baking soda
- Overuse can leave towels feeling harsh
How it holds up
Hard-water minerals deposit in the pile and physically stiffen it. Washing soda binds those minerals so they rinse away instead. If your towels went stiff and no amount of softener fixed it, this is the thing to try.
Who should skip it
Skip it if you have soft water. It will not help and can leave towels feeling scratchy.
Specifications from Washing soda for towels, laundry booster comparison.
Best for musty towels
20 Mule Team Borax Laundry Booster
20 Mule Team
A natural mineral booster that neutralizes odor by cutting the oil and bacteria behind it -- the right tool for towels that smell, rather than towels that are gray.
| Type | Sodium tetraborate (borax) mineral booster |
|---|---|
| Use | Added to the wash alongside detergent |
#ad How we are funded · Prices checked September 23, 2026
What we like
- Genuinely the best of the common boosters at neutralizing musty towel smell
- Cheap, and a box lasts a very long time
What we do not
- Does nothing useful for whiteness -- that is oxygen bleach's job
- Keep it away from children and pets; it is not food-safe
How it holds up
Musty smell is bacterial, living on body oil trapped in the pile. Borax raises the wash pH and strips that oil, which is why it works where a scent booster only masks.
Who should skip it
Skip it if your problem is dinginess rather than smell. You want a whitener, not a booster.
Specifications from Borax for musty towels, laundry booster comparison.
Best fragrance-free whitener
Molly's Suds Oxygen Whitener
Molly's Suds
The same oxygen-bleach chemistry without added fragrance, for households where scented laundry products are a problem.
| Type | Oxygen bleach powder |
|---|---|
| Fragrance | None |
| Formulated for | Sensitive skin, eczema, allergies |
#ad How we are funded · Prices checked September 23, 2026
What we like
- Oxygen-bleach performance with nothing added for scent
- Sensible choice for towels that touch reactive skin daily
What we do not
- Costs more per load than the mainstream oxygen bleaches
- Same cold-water limitation as every percarbonate product
How it holds up
Chemically this does the same job as any oxygen bleach: it lifts soil without degrading cotton. The reason to pick it is the absence of fragrance, not better whitening.
Who should skip it
Skip it if fragrance is not a concern -- you are paying a premium for a feature you do not need.
Specifications from Molly's Suds Oxygen Whitener, cited in the laundry booster comparison.
Frequently asked questions
What is the best laundry detergent for towels?
One that rinses out completely. A low-dose, low-suds powder such as Charlie's Soap is ideal for warm washes; a dye-free liquid like Tide Free & Gentle is better if you wash cold.
How much detergent should you use on towels?
About half what the bottle recommends. Excess detergent does not rinse out -- it stays in the pile, attracts soil and blocks absorbency.
Should you use oxygen bleach on towels every wash?
On whites, yes. Sodium percarbonate lifts soil without attacking cotton, so unlike chlorine there is no cumulative cost. It needs warm water to activate.
What is the difference between borax and washing soda?
Borax is sodium tetraborate and is best at neutralizing odor; washing soda is sodium carbonate, a stronger alkali better at cutting grease and softening hard water. They do different jobs and can be used together.