r/laundry Jan 29 '26

Updated Subreddit Rules

321 Upvotes

The mod team has made a few changes to existing rules and added some new ones. The full list is below. New to the list is rules 2, 6, and 7 which are in bold below.

  1. Be civil. Personal attacks, harassment, and aggressive behavior are not allowed.

  2. Posts Must Be Laundry-Related Discussion of other topics is allowed when it directly connects back to laundry. Off-topic content may be removed.

  3. No Marketing, Spam, Astroturfing, or Advertisements. Do not post links, promotions, or advertisements for your laundry business. Astroturfing and undisclosed affiliate links are not allowed. Questions about laundry businesses are fine.

  4. No Posting of Body Fluids You can discuss stains and stain removal, but please avoid posting any images or explicit content of body fluids.

  5. No Hacking Coin Laundry Equipment This is not the forum to discuss how to avoid paying for laundry by tampering with equipment.

  6. Bad Soup If the first pic in a post is of soaking textiles, it needs to be hidden with the Spoiler flag .If you’re not sure how, or it gets skipped, a mod may adjust it for you.

  7. Dangerous Chemistry Dangerous and/or incorrect chemistry advice is not allowed. Posts or comments encouraging mixing unsafe chemical combinations will be removed.


r/laundry Feb 24 '26

The Chemistry Behind The Clean - Laundry Detergent Explained - Surfactants, Part I

1.3k Upvotes

(this is the long-delayed first installment in my post series, The Chemistry Behind The Clean, a guide to what's in laundry detergent, designed to give people the knowledge to understand what's in the products that clean our textiles and make them more informed consumers)

What Are Surfactants, And Why Do We Care?

Surfactants are the active cleaning agents in detergents that do the heavy lifting of removing soils from textiles.   Short for “surface-acting agents”, surfactants connect soils to water, even when the soils themselves repel water or are more attracted to textiles than water.   The combination of soil and detergent and water can then be drained off,  further diluted by rinsing, drained again and spun out.   This is distinct from the action of soaps, which will be covered in a future installment.  

The development and commercialization of synthetic surfactants in the 1920s is probably the most significant contributor to reduction in time and effort spent on textile care.  Work to condition the water, scrub textiles and remove soap by wringing or banging was largely eliminated because of how well even those rudimentary surfactants work to remove soils.

Hydrophobia - Without The Rabies

All surfactants work because the individual molecules have ends with distinct properties.  One end (the head)  is highly attracted to water (hydrophilic) and thus very much not attracted to oil (oleophobic).  The other end is very attracted to oil (oleophilic) but similarly repulsed by water (hydrophobic).   This fundamental structural contrast is key. 

A Surfactant Molecule, With Hydrophobic Tail and Hydrophilic Head

When at least a minimum amount of surfactant is  dissolved in a solvent (like water), surfactant molecules want to get together - the water-hating ends hang out on the inside, the water-loving ends hang out on the outside.  This forms a structure known as a micelle, and micelle formation is predicated on reaching the “Critical Micelle Concentration”. Below, an illustration of a nonionic surfactant intended to remove oily soils. The water-loving heads face out, the water-hating ends get together in the middle to escape the water.

A Micelle Of Nonionic Surfactant

When a micelle encounters a soil that the hydrophobic tail is attracted to, the micelle breaks up, the tails grab the soil and drag it into the water (thus removing it from the textile)  and the micelle re-forms, keeping the soil up in the water to be drained or diluted away.   Let’s look at this in the context of removing a common soil from textiles:

Here we have the start of the wash process; surfactant micelles have formed in the wash water and there is soil attached to the fabric substrate.

The Start of The Wash - Soiled Fabric In A Detergent Solution

Now the hydrophobic tails of the surfactant molecules have found themselves more attracted to soil than each other and they're bonding to the soils. The hydrophillic heads are dragging the molecules towards the water.

Surfactants Attaching To Soil

The micelles re-form as the soil detaches from the substrate - they reorganize into groups of their own kind (more on this in a moment).

Micelles Reforming With Soil-Surfactant Particles

When all the soils are removed from the substrate and floating in the water, the textiles are clean and it's time to remove the soil-surfactant combo from the drum.

Completely Clean Textile

The Chemistry of Attraction (It’s Not Just A Bottle of Chanel No. 5)

While all surfactants work the same general way, there are differences in what kind of soils the hydrophilic ends are attracted to, because the hydrophilic ends differ.  One primary difference between surfactants is the electrical charge the hydrophilic end carries.    If the business end has a negative charge, it’s an anionic surfactant, and it’s attracted to soils with a cationic (positive) charge.  If the business end has no charge, it’s a nonionic surfactant and is most attracted to soils without an electrical charge.  If the business end has both a positive and negative charge in balance, it’s an amphoteric or zwitterionic surfactant, and the behavior changes based on the pH of the wash as a whole.  

There are also surfactants with positive charges, the cationic surfactants.  These aren’t used for cleaning - they’re what makes fabric softener work, and will be discussed in a (much) later post.

Why Charge Matters: 

The difference in which soils a given surfactant is attracted to is a critical determinant of cleaning performance.   Soils that lack an ionic charge like petroleum oils or intact sebum are much less visible to anionic surfactants and are removed better by nonionic surfactants.   Conversely, soils that are highly cationic like soot and mud and dust, and thus attracted to textiles with a negative charge may be neglected by nonionics and remain electrically connected to the textiles.   For those soils?  Anionics in the mix improve cleaning performance. 

Four Classes Of Surfactants

Almost all finished detergent products contain anionic surfactants and most contain nonionic surfactants.   Amphoteric surfactants are relatively uncommon in conventional detergents but often appear in green/biobased formulas.  

Other Differences Between Surfactants:  Tail Length And Single vs Double Tails.

Aside from the electrical charge differences in the head, two aspects of surfactant structure that affect their action against soil are the tail length and whether they are single tail (common) or double-tail (less common).   I’ll talk more about this in Part II, as it’s common to include surfactants of various tails to optimize performance against specific soils and in specific wash conditions.

Coming Up In Surfactants Part II - Curling Up With A Good Jug Of Detergent

In the next installment, we’ll look at common surfactants found in conventional and plant-based detergents, and how they’re manufactured, along with the differences in soil removal capabilities and environmental impacts.

The work is my original work and I retain copyiright.  My financial disclosure information and how I get paid for this work can be found at my disclosure link


r/laundry 12h ago

Got Suds?

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284 Upvotes

I do believe my coworkers may be using entirely too much detergent. 😂


r/laundry 5h ago

Another DNAse product

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45 Upvotes

I was at Whole Foods, and they were out of the 365 Unscented Powder! I saw another comment in this sub from about 6mo ago saying it was being discontinued; I hope that’s not the case. They did have 365 sport, which I bought, and they also had this “Aunt Fannie’s Extra Strength laundry detergent powder,” in eucalyptus scent or fragrance free.

Here are the ingredients from their website: Sodium Carbonate, Sodium Borate, Sodium Percarbonate, Calcium Carbonate, Hydrated Silica, Sodium Citrate, Sodium Sulfate, Magnesium Carbonate, Cellulose, Sucrose, Magnesium Sulfate, Kaolin, Polyethylene Glycol, Deoxyribonuclease, Titanium Dioxide, Sodium Thiosulfate, Protease, Amylase, Mannanase

Are all those minerals purely for water softening? Nothing on that list appears to me to be a surfactant. But it does have DNAse and is fragrance free, so seemed worth a mention. I don’t remember the in-store price but it’s 19.99 for 44oz (supposedly 70 loads) on Amazon.


r/laundry 4h ago

UK based new to r/laundry! Have I been washing clothes wrong my whole life?

37 Upvotes

Hello all! Im new here. Stumbled across by accident and then got engrossed!

Im uk based and don’t recognise a lot of the products everyone is talking about in the group, however i now have a new found fear that my washing machine is dirty, my clothes arent getting clean and my detergent is just seasoning my clothes 😅

We are family of sensitive baby skinned souls so I always use Fairy soap pods + fabric conditioner, and what ever stain remover / vanish is on offer. Im also a bit partial to a bottle of tallow and ash now and again. We are in a super hard water area and im forever cleaning black gunk out of my detergent draw - this is also why I favour pods over powder.

I guess what my question is is that what products - easily available in the UK - are needed as staples for clean laundry / machines? Im 35 and feel like I’ve been washing clothes wrong my whole life 😭


r/laundry 8h ago

PSA: BOGO Citric Acid

62 Upvotes

I just noticed that the "Pure" brand on Amazon has a BOGO offer on their powdered citric acid. With coupon it makes it 4lb for $10. No idea how long the coupon will last. It wasn't there a couple weeks ago.


r/laundry 20h ago

These beasts are being replaced in my complex by newer ones… I’m skeptical

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205 Upvotes

r/laundry 49m ago

How do you get your sheets to smell really good and long lasting ?

Upvotes

As above. I wash my sheets and clothes and they just don’t seem to smell like anything . I have a GE deep top loader ( honestly not a fan, I prefer a washing machine with an agitator ). I use All detergent and sauvintel fabric softener


r/laundry 2h ago

Nerd out on me

4 Upvotes

I’ve really enjoyed getting into laundry science and this sub is a daily read for me now. I have made a lot of changes and added things to my laundry routine, but I still feel like I have a lot to learn.
I feel like everyone has one or two things that really make the difference for them, and I want to know what that is for everyone.
I want to share everything I learn with everyone I meet but have started asking people if they want some laundry science…unfortunately, the answer is almost always a variation of no thanks, so in case you need it, permission to nerd out granted!


r/laundry 1h ago

How to keep clean on a budget

Upvotes

Hello all! Im a recently moved out 18 year old guy and live in a shared apartment with no laundry unit. There is a laundromat nearby, but with my current income I cant afford to wash my bedding every/every other week like i usually do. I’m aiming to do this once a month, but I was wondering if anyone had any tips on how to keep my space smelling nice in the mean time? Ive been using Odorban occasionally and thats been helpful, but any other advice would be super appreciated!


r/laundry 8h ago

Sunscreen stains- what cause them, how to prevent & remove them - repost since sunscreen season is on full

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11 Upvotes

The ammout of pink/yellow/orange stains skyrocketed in last month,

So I repost my science based post on what causes and how to remove sunscreen stains


r/laundry 1h ago

Downy Purifying Rinse - Residue Left?

Upvotes

new to this subreddit, but could use some advice. I was reading old posts and everyone seems to swear by this citric acid purifying rinse.

I tried it for the first load today, towels, and they came out and it almost feels like there’s a residue left? like the towels are a bit crinkly feeling. hard to describe.

Did I use too much maybe? I used the max on my front load machine. Tide pod as usual. extra rinse as usual. hot water as usual. only change was the purifying rinse.

I’ve heard good things but can anyone help with what i might have done wrong? thanks all.


r/laundry 31m ago

Bringing a bath mat to the laundromat?

Upvotes

If you saw someone putting a bath mat in one of the machines would you be grossed out?

I have a large bath mat in front of my shower. I’m the only one that steps on it. I vacuum it weekly.
It’s in good condition aside from the fact that my bathroom is poorly ventilated and it just needs a refresh.

Would it be nasty to bring it to the laundromat? Should I just buy a new one?


r/laundry 4h ago

Please help me figure out if my new washer is a lemon.

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3 Upvotes

Hello Everyone,

I'd appreciate any help on shedding some light on laundry issues with my 3 month old Electrolux Laundry Centre.

Model ELTE760CAW

https://www.electrolux.ca/en/Laundry-Appliances/Washing-Machines/stacked-washer-and-dryer/ELTE760CAW/

Mustiness - I was having a problem with a little lingering mustiness in the clothes at first, and tried running the cleaning cycle as per the manual a few times (using a bit of regular bleach)

The mustiness didn't really completely go away even after re-washing white towels with bleach.

I use TIDE FREE AND GENTLE, also tried using OxiClean powder in the bottom of the drum which didn't do much. I normally do my whites in hot water, colours in warm.

DULLING - Then my color clothes started getting dull, but my whites started taking on a darkish grey I can't get out. (all 100% cotton)

You can see my examples up in the pics.

I tried re-washing and re-bleaching the whites to no avail. I reduced the amount of soap I was using after being recommended that.

SYNTHETICS - The weirdest thing is that some of my synthetic fabrics starting completely changing color as well! I DID NOT bleach them, or even do them right after a bleach cycle.

If you look at the 4th photo, there are two pairs on underwear. The ones on the right used to be the same whiteness as the ones on the left! (Except for the leg ribbing, those were always a darker colour. (87% Nylon / 13% Elastine)

In the last photo, the shirt was part of a set, and the grey underwear below are what the shirt used to look like. yes - the tan shirt used to be that grey color. (87% Nylon / 13% Elastine)

The changing color issue has been somewhat intermittent for some reason. I should also mention I don't have any new clothes recently - everything has been owned and washed many times.

I did discover that the installer put the drain hose too far down the standpipe, so I set it back to the recommended 7 inches. I'm now afraid to wash clothes in case this still happens.

Do you think it's a lemon and I should get a replacement?

Any recommendations are greatly appreciated!


r/laundry 2h ago

Speed Queen Washer Leaking from Outer Tub Top Seam

2 Upvotes

We purchased a Speed Queen Commercial TR7003WN in January 2025. About four weeks ago, I started noticing water on the floor after larger loads.

The first authorized repair technician said I was overloading the washer and that water was splashing over the top of the tub. I was skeptical because I haven't changed my load sizes or wash settings since we bought the machine 18 months ago. When the front panel was removed, there were water streaks on the outside of the tub, but his test cycles couldn't reproduce the leak.

I called a second authorized repair technician and explained what the first technician found. Initially, he agreed with the first diagnosis. After more troubleshooting, though, we discovered the leak only occurs during larger loads and is actually coming through tiny pinholes along the upper seam of the metal outer tub.

The second technician believes the pinholes were caused by unbalanced loads that allowed the tub to rub against the cabinet until it wore through. That explanation doesn't completely make sense to me because the washer is designed to stop when it detects a significant unbalanced load, and that has only happened a handful of times since we've owned it.

There are also no visible signs of rubbing on the cabinet or the tub. Along about one-quarter of the upper seam, you can feel small raised bumps under the paint. Out of curiosity, I gently rubbed one of the bumps, and the paint coating came off, revealing a pinhole underneath. That made me wonder if the hole was already present beneath the coating rather than being worn through from rubbing. I don't know if that's significant or not, but it seems odd.

In the photos, the white dots are the pinholes where the water is leaking. In the close-up, the red circles show the raised bumps and the yellow circles highlight a few of the pinholes.

I'm waiting to hear back from Speed Queen because the second technician believes this is user-caused damage and therefore not covered under warranty.

Has anyone else experienced pinholes or leaks along the upper seam of the outer tub on a TR7003WN (or another Speed Queen top-loader)? If so, what was the cause, and was it covered under warranty?


r/laundry 4h ago

Advice needed: Enzyme booster

4 Upvotes

Howdy, laundry nerd fam! Need y'all's help bc I am having extreme difficulty using the Lipase List spreadsheet on my phone.

I'm looking for an enzyme laundry booster that's unscented, no OBAs, and no oxygen bleach to go with my 365 powder.

In order of importance:

  1. Unscented

  2. No OBAs (to protect darks)

  3. No (or very little) oxygen bleach (to protect darks)

Notes:

  1. I have Dirty Labs for DNase.

  2. I have Oxyclean Free

I'm neurodivergent and am trying to systematize laundry similar to:

  1. Add detergent detergent

  2. Add primary booster (the one I'm looking for above)

  3. If whites, lights, or colors, add oxi

  4. If load is unusually gross/stinky, add Dirty Labs

  5. Add citric acid to rinse

  6. Result: Clean clothes my nose will confirm are clean on wash day, while wearing (no odor rebloom), and from a drawer weeks later (no dirty washer smell that appears during storage, been there)

Bc I'll be asked: I wash on a hot/extra hot cotton cycle with an extra rinse in an LG front load that I clean every 2-3 weeks, swapping between citric acid and chlorine bleach cleanings. I keep that washer smelling and looking *fresh* y'all. I tumble dry most items, and I air dry delicates.I use 365 powder, 1 scoop, in very soft water.

So.... Back to that booster and the Lipase List I'm having no luck working on my phone: Do we know of an unscented enzyme booster w/o OBAs and no (or very little) oxygen bleach (to protect my darks)?


r/laundry 6h ago

So I’m a dummy…

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3 Upvotes

So there were some stains on this baseball cap that was a gift from a friend and handwashing wasn’t doing the trick. I then researched online that you could put it in the top rack of a dishwasher on a gentle cycle with no drying, so that is what I did. I then promptly forget that although everything else was likely dishwasher safe, the leather badge is not. I took it out halfway through the cycle to find the badge very faded and dulled in color. is there anything i can do to fix it and restore its color?


r/laundry 1d ago

Hear ye, hear ye... FEBU we await thee

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168 Upvotes

Are we all just a bunch of anxious people here?

Let's face it 😭 we are all waiting for Febu restock because either we are close to running out or we have run out.

I'm am addict and I cannot lie. Just a little whiff of FEBU...please...


r/laundry 7m ago

Opinions on Great Value oxi clean?

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Upvotes

It seems to have a slightly different ingredient list to the name brand. Opinions?


r/laundry 11m ago

Spa Day at Laundromat/Communal Laundry Room?

Upvotes

Has anyone done spa day with a shared laundry machine? I'm worried about ammonia possibly reacting with residual bleach, and etiquette in general.

The WaveMAX I go to is often used for washing linens & gowns for nearby medical facilities. The people working there are always wiping down surfaces, although I don't recall if they ever wipe the inside of the drum (front loader).

My apartment has a laundry room that's okay. The machines aren't old, they're just basic and slow. Hardly anyone uses them. Those are top loaders.

If need be, I can go bug a relative and use their washing machine, but I'd rather not impose if I don't have to. Any advice or thoughts are welcome 💕


r/laundry 1d ago

1920s-ish swimsuit. Not sure what material but feels like cotton or wool. How do I wash and protect it?

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803 Upvotes

r/laundry 33m ago

Is it normal for a towel to look like this after a first wash?

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Upvotes

For context, I bought White Company spa towels with waffle edge. They were very fluffy but shedding fibres a bit so I put them in the washing machine using detergent designed for whites (UK brand Vanish Oxi Gold) and no fabric softener at 40 Celsius (cotton wash). I don’t have a dryer so they had to be air dried. It looks like the individual loops have swelled and now the texture is very different.

I’m not sure what has happened, if this is intended, and if not, can the towels be restored?

Any advice appreciated!


r/laundry 9h ago

DIY sodium citrate question

4 Upvotes

I'm preparing to overhaul (and hopefully simplify) my laundry routine. I got citric acid, and I have a box each of borax and washing soda that I would like to use up. Can either/both be used to create sodium citrate for the wash cycle? I know our water is hard but don't have numbers yet (but getting a test kit today!).


r/laundry 5h ago

Why my hat is always like this after wash?

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2 Upvotes

I have other Nike hat; and that one is not like this.

I just usually chuck it in to the washing machine like other clothes.

Any suggestion is appreciated.

Thanks


r/laundry 18h ago

desperate request for advice on detergents as someone who is allergic to EVERYTHING

19 Upvotes

begging for help at this point because i'm completely at my wits' end. please save me from my utter misery as i've been non-stop breaking out in rashes!

my normal laundry routine is to do three washes for each load: (1) first wash with detergent + hot water + 3 rinse cycles, (2) one cold water rinse on normal with vinegar, and then (3) a last quick wash rinse with cold water. the machine is an LG front load washer and i make sure to do a tub clean before each wash to get rid of any possible residue.

the problem is that i've become allergic to not only the usual "fragrance-free" suspects (e.g. tide), but also all of the recommendations below that are often suggested as alternatives. i basically break out immediately in eczema and huge patches after using any of these detergents:

  • nellie's laundry soda (regular & baby)
  • attitude fragrance-free liquid detergent (both regular & baby)
  • eco max hypoallergenic laundry wash (no sulfates)
  • any major "free/clean/hypoallergic brands) e.g arm & hammer, purex, downy, etc.

i'm constantly itchy and bleeding all of the time, and we suspect it's the laundry because the locations of the rashes (e.g. in a ring around the neck, exactly in the same area as the edges of underwear, absolutely no rashes in the arms because i only wear t-shirts that cut off right above the elbows). willing to try anything at this point as i'm completely desperate!