Finding the Best Natural Soap
I admit that I love a body wash (specifically, this one), but bar soap is a much more planet-friendly choice (it's almost always plastic-free!). Bar soap is also one of the easiest products to get right when it comes to clean, safe ingredients. Unlike other categories we investigate here--like laundry detergent or shampoo--you don’t need complex formulations to make an effective cleanser. The best non-toxic bar soap is really just just saponified oils with maybe some clay or essential oil for scent.
But because this category is so simple, we hold it to an even higher standard. Our guide goes further than most: to help you identify the the best non-toxic bar soap — the ones that really do everything right.
In this guide, you’ll see how we separate soaps into Best, Good, Okay, Bad, and Sneaky Stuff. Only the bars with the cleanest ingredients, responsible sourcing, and zero unnecessary additives make it into our “Best Stuff” category.
In terms of performance, bar soaps were much easier to review than something like deodorant; unless a soap really dries out my skin or smells offensive, I feel that it’s done its job! The main criteria for evaluating the best natural soap really comes down to the quality of the ingredients and manufacturing processes. Let's get into it.
112 comments
Nancy
Really like the Castelbel line of bar soaps……Do you think the ingredients are Okay? Probably the best soap I have ever used…The skin feels wonderful…Please tell me what you think… :)
Nancy Wisehart
Really like the Castelbel line of bar soaps……Do you think the ingredients are Okay? Probably the best soap I have ever used…The skin feels wonderful…Please tell me what you think… :)
Michelle
I am trying to get the chemicals out of my family’s daily use. We only use kirks I add it to my laundry as well as make my own dish soap, hand soap and bathe with it. It is used in everything possible. I was under the impression that it was a safe soap, what is your opinion on this. Please help with this as much as we use it, I need to change this if it is not good.
A real artisan soap crafter
Hand made soap made with coconut oil or castor and many other healthy oils will generate a wonderful full lather. So what you read is wrong. Using Kirk’s or Dr Bonners, they are factory produced chemical soaps. Also not 100% olive oil. Olive oil does not lather in bubbles, more so then a slimy like lather. If you want real information talk to a authentic hand made soaper. Talk to several. Never take info at the only truth by reading one thing. Read everything, then pick the real out of that. Also the ingredients must be listed in full on everything, even small time crafter’s soaps. SLS, Phthalates, Parabens, are all bad. Citric acid is not needed in soap at all, and unscented is the way to go if your unsure whether it’s really an essential oil or fragrant oil.
Oh and for the record. I have been tested for allergies and am allergic to pretty much everything. I live in a real house with real pets and real kids and real dirt, that must be cleaned. I make all of our soaps, shampoos, deodorants, cleaners etc. So I know the difference between good and bad chemicals.
A real artisan soap crafter
No reputable soap crafter would use a fragrance oil with phthalate or ingredients such with Parabens. And no, not all fragrance oils have Phthalates. This article is riddled with misinformation and basically an advertisement.
Also, you would have to be a complate idiot to believe there is an essential oil called Cotton candy. It’s a fragrance oil, and if phthalate free it should be safe. Essential oils come from plants and natural materials, not Cotton or Cotton candy or Creamsicle. Lol. Come on people, you can’t be that naive.
Also ANY store soap is basically harmful chemicals. SLS, Parabens, Phthalates are a few ingredients they may contain.
Also Citric acid and borax are used to lower the PH. Levels of liquid soap by many soapers. The wrong amounts can do more as much harm as leaving the PH. High.
Just my professional two cents.
A real artisan soap crafter
No reputable soap crafter would use a fragrance oil with phthalate or ingredients such with Parabens. And no, not all fragrance oils have Phthalates. This article is riddled with misinformation and basically an advertisement.
Also, you would have to be a complate idiot to believe there is an essential oil called Cotton candy. It’s a fragrance oil, and if phthalate free it should be safe. Essential oils come from plants and natural materials, not Cotton or Cotton candy or Creamsicle. Lol. Come on people, you can’t be that naive.
Also ANY store soap is basically harmful chemicals. SLS, Parabens, Phthalates are a few ingredients they may contain.
Also Citric acid and borax are used to lower the PH. Levels of liquid soap by many soapers. The wrong amounts can do more as much harm as leaving the PH. High.
Just my professional two cents.
A real soaper
Real Castile Soap is 100% pure olive oil and has a 0 cleansing factor. Therefore there is no way what you were using was all natural Castile Soap. I have been making it for years and there is a zero chance it caused your problem if it was pure. Castile is also not a laundry soap, laundry soap (bars) are made with borax, which is not Castile Soap. Either what you were using is not 100% Castile Soap properly made. Or it had chemicals in it that caused your issue. Heavy lye soap (also laundry soap) will do what you described as well. The popular kids liquid soap would have been nothing more then SLS, and chemicals too.
Oh and no reputable soap crafter would use a fragrance oil with phthalate or ingredients such with Parabens. And no, not all fragrance oils have Phthalates. This article is riddled with misinformation and basically an advertisement.
Allana
I’m looking for a reasonable natural soap but as I was reading through the comments I saw more than one person talk about Castile in Dr Bronner’s soap causing skin irritations and I was actually considering trying that one out. What should I do? Should I still try it or try something else?
Delia
I’ve been wanting to by soap from luminance skincare. Can you check these out?
Rosa
Hi Maia! I have sensitive skin and have noticed that products like Neutrogena irritate my skin immensely. What would you suggest for someone like me to use on my sensitive skin? I was looking into Tom’s of Maine but was unsure. Thanks!
Maia James
Yes, Shea Moisture bar soaps are good stuff:).
Thomas Oger
My family has been using Aspen Kay , we really seem to like the goat milk with oatmeal. Just wondering what you though of the Aspen Kay brand bar soap? Thanks
Sue
Hi Mary,
I seem to be having the same problem. We get a bad rash when we use Kirks or Dr Bonner’s. Have you ever heard of anyone else having this problem? Castile soaps are recommended for people with skin issues so it’s odd that I’d develop a skin issue when using one. I can use any other soap, including Dial, and have no problems.Did you ever try the Kirks with aloe?
Sue
I love your website!
Regarding Ivory – the sneaky stuff you list is fragrance. Clearly unnecessary and not ‘good stuff’ but here is my question – how bad is it? I am on a tight budget and can’t spend much. I need the fewest/safest ingredients for the cheapest price. Ivory seems to be a balance of cheap with ‘almost’ pure ingredients. The tallow part doesn’t bother me with regard to animal products. I tried Dr Bonners and Kirks and we seem to have a reaction to those both, though I am not sure why but we get rashes – similar to the poster above “Mary”. I’ve seen a few websites mention some people can’t tolerate coconut oil soap – all I know is we have rashes that come with the soap and oddly….go away wen we use Dial. My goal is to reduce our chemical exposure, it’s not imperative for us as it would be for those with skin issues, but for obvious reasons I’d rather not lather up with chemicals, or at least not very many chemicals – even though those chemical soaps seem to make the rash go away. We’ve used Ivory in the past when on sale and have no reaction to it (again, we don’t have sensitive skin…I used to just buy whatever soap was on sale, usually Dial). Any thoughts on the best balance of the fewest chemicals and the lowest price? I was thinking Ivory until I found your website, now I’m not sure but I can’t afford more than 45 cents per ounce on a bar soap.Tiff .S
How about shea moisture bar is this a safe, effective bar soap to use ?
Tiff .S
How about shea moisture bar is this a safe, effective bar soap
Rebecca
I LOVE Alaffia’s Good Soap!!!!! Just took advantage of Whole Foods ! a bar on Alaffia"s Good Soap. I purchased a few varieties though and now I am left wondering what the best way to store them is. Thoughts?
Maia James
Yes, the Tom’s bar soaps are fine!
Jake C.
How about Tom’s of Maine Moisturizing Bar: Sensitive (or otherwise), is this a safe, effective bar soap to use?
Thanks, great article!
Maia James
I would consider this Good Stuff!
Tricia
Do you have any opinion on Kiss My Face Olive Oil Bar Soap?
Maia James
I don’t know this brand, but will add to our list for a future investigation!
Maia James
I’m not a big fan. They have sodium benzoate and cocamidopropyl betaine listed as ingredients.
Sarah
What about Caprina Goats Milk Soap?
Natasha
What can you say of honest liquid hand soap and bar soap? Thank you!!!
Maia James
I think Tom’s bar soaps are fine.
Robin J.
Hi Maia,
Noticed you have some goat milk soaps on the Good Stuff list, what do you think of this Goatboy brand? They are local to my state, and seem reasonably priced. We love the unscented. Would you consider this Good Stuff?
http://www.goatboy.us/ – shows goats milk, sodium hydroxide, olive oil, palm oil, coconut oil and shear butter.
Thanks!
Drew
What are your thoughts on Tom’s of Maine bar soap? Specifically the Daily Moisture with Olive Oil and Vitamin E?
Thank you very much!Mary
When I was getting rashes in the shower long ago, I was not sure what was going on. I thought maybe the water was too hot. Then I figured out the shampoo and soap I was using were to blame.
I am still struggling trying to find a shampoo. I will find one, that I do not seem to react to, then I read if it lathers it is a chemical, so I quit using shampoos that lather. I hate shampoo bars. So I just gave up and using honey to shampoo with. I person just recently told me about Rhassoul Clay. His wife is severely sensitive, so she can not live in a house. She lives in a teak boat. I still have not tried the clay.When I found Dakota free soap , that fixed half my problem. It is made by someone who was also having multiple sensitivities. The other bar soaps she has on her site, came out fairly recently.
Maia James
Looks fine to me, although no ingredients are organic.Â
Maia James
I can’t find a list of the actual ingredients on their website, so I am unable to weigh in!
Tara
I’m currently detoxing and this was so helpful! I was looking for a bar soap to make my own laundry detergent & this is perfect!
Walia
Can u tell how is grandma’s handcrafted herbal soap.http://grandmaslyesoap.com
Lesia
What about Yardly?
Maia James
No good, unfortunately. Sodium laureth sulfate and a bunch of other Bad Stuff.
Maia James
I just took a quick look, and didn’t see anything concerning.
April Paddie
What are your thoughts on Aveeno fregrance free body wash?
Becca
What are you using now instead of castile soap that doesn’t strip the oils in the vaginal region? Thanks!
Beverly Lovett
I’m so tired of looking through the stores at all the “natural” selections just to read a gazillion ingredients in the back, half of which I have no clue what they are or if they’re really safe. Thank you so much for this information!! I may have to order online but I’m definitely going to start getting better soap than what I have!
Victoria
Hi, what do you think of Good Soap by Alaffia? Thank you so much for your time.
Maia James
Looks like Good Stuff to me!:)
Sonna Nixon
In my previous comment, I should of said that I was using the Kirks Original Coco Castile Soap. It has been around for years.
Sonna Nixon
Please women, be cautious when using the Castile soaps. My sister recommended Castile soap for stripping the oils, etc., out of my hair. It was great for this but I ended up using it when I showered as my husband liked it as well. I ended up with a horrible vaginal problem because the Castile bar was stripping all of the oils out of my vagina area, and the miserable problem lasted for months. Thinking it was a yeast infection, I kept seeing my doctor who told me I did not have this problem. I finally figure out on my own what was happening as I had experienced a similar problem years before with my then very young daughters who were bathing with a then popular liquid bath soap for kids. We used to shave off pieces of a bar of Castile Soap to put in our laundry. That is how strong it is.
Heather
This has been so helpful! I’m so disappointed about Ivory soap.
Eric
Thanks for clearing up these mysteries! What are your thoughts on Iron Lion Soap?
www.ironlionsoap.com
Toni
Don’t use the soap, just threw mine all out. Just read today that it carries ingredients that are cancer causing.
Maia James
This doesn’t appear to have any of those? https://gimmethegoodstuff.com/store/acure-organics-lemongrass-argan-stem-cell-shampoo-for-all-hair-types/
And neither does this soap: https://gimmethegoodstuff.com/store/paleo-skincare-tallow-and-herb-soap-for-babies/
Janet
I am extremely frustrated looking for a nontoxic with NO tea tree, lavender, hemp or grapefruit essential oils due to medications I am taking. Are there any soaps, shampoos or conditioners like this?
Matt
I am also curious about Kirk’s Original Coco Castile soap, as it is readily available at stores like Walmart and Smith’s/Kroger. The label says, “Natural, Hypoallergenic Skin Care with No Animal By-Products or Synthetic Detergents.” The ingredients are listed as: Coconut Soap, Water, Vegetable Glycerin, Coconut Oil, and Natural Fragrance.
Maia James
Yes, unfortunately Ivory contains synthetic fragrance.