Castile soap cleans without stripping your skin's barrier. Here is what the plant oils actually do, what is left out, and why one bottle replaces a shelf of products.
Castile soap gets recommended for sensitive skin more often than almost any other cleanser, and the reason usually given, that it is natural, is the least useful part of the explanation. Plenty of natural things irritate skin. Poison ivy is natural.
The real reasons are more specific, and they are worth knowing because they also tell you when castile soap is not the right answer.
True castile soap is plant oil saponified with an alkali, potassium hydroxide for a liquid soap. The alkali is entirely consumed in that reaction, which is why our label states that none remains after saponifying the oils into soap and glycerin. What you end up with is soap and glycerin, and nothing else unless someone adds it.
Most things sold as body wash are not this. They are synthetic detergents, built from surfactants chosen for foam and cheapness, then thickened, preserved, colored and scented back into something pleasant. That is a legitimate way to make a cleanser. It is just a different product with a longer ingredient list.
The single most useful property of a short ingredient list is that when something does go wrong, you can work out what it was. Ours is water, an organic blend of nine plant oils, potassium hydroxide and USP vegetable glycerin. There are no artificial detergents, synthetic dyes, foaming agents or synthetic preservatives.
Our blend is coconut, olive, castor, argan, jojoba, hemp, sweet almond, apricot kernel and prickly pear oils. That blend is hypoallergenic and non-pore-clogging, which is what makes a soap-based cleanser workable on a face at all. Part of the oil remains on skin after rinsing, which is why the finish is not the tight, squeaky feeling that means a cleanser has stripped you.
Saponification produces glycerin, a humectant that draws water toward skin. In commercial soap-making it is often separated out and sold on. It stays in ours, and there is added USP vegetable glycerin on top of it.
This soap is 2-3 times more concentrated than ordinary liquid soap and is meant to be diluted. That is not just an economy measure. It means you set the concentration. Body wash is one part soap to one part water. The facial cleanser recipe is roughly one part soap to twenty-four parts liquid. If a cleanser is too strong for your skin, with most products your only option is to buy a different one.
If you are here because your skin reacts to things, this is the section to read.
Fragrance ingredients are among the most common causes of allergic contact dermatitis, and that includes natural ones. Essential oils are fragrance. Lavender, tea tree, citrus and peppermint are all documented sensitizers for some people. “Unscented but with essential oils” is not unscented in any way your skin cares about.
Ours has no added fragrance and no essential oils at all. Whatever mild smell there is comes from the oils it is made from. If you want it scented, that is your addition after dilution, and it is worth patch testing separately.
Worth saying plainly, since it appears on our own label: no agency in the United States defines “hypoallergenic” for cosmetics, and no one has to prove anything before printing it. It signals a formulation intent, not a guarantee. Nothing is non-allergenic for everybody.
What you can check instead are the claims someone outside the company assessed. Ours is EWG Verified™, which requires full ingredient disclosure and the absence of the ingredients on their list of concern. It is also POFCAP certified palm-oil-free, plus Certified Vegan, Non-GMO and Certified Fair Trade, and never tested on animals. Our Nature's Gold Collection is the first castile soap in the USA to carry POFCAP.
Apply the diluted mixture to the inside of your forearm, leave it a full day, and look again. One wash proves nothing; contact reactions often take 24 to 48 hours to appear. Do it again separately for anything you add yourself.
Reactive skin often does better at a weaker mix than the recipe suggests. Start thinner and work up. Under-diluted castile soap is the most common reason people describe it as harsh.
This is a soap. It is not a treatment for eczema, psoriasis, dermatitis or any other condition, and nothing here should be read that way. If you have a diagnosed skin condition, ask your dermatologist before changing what you wash with. That includes changing to this. The same goes for a baby with a skin condition.
Every one of these is chemistry rather than a flaw, and knowing them in advance is the difference between switching successfully and giving up in week one.
Do not begin with your face. Start with the body wash dilution, which is equal parts soap and water, and give it a week for your skin to settle after whatever you were using before. Move to the facial recipe once you know it agrees with you.
The same bottle also becomes shampoo, hand soap, dish soap, laundry detergent and household cleaner. Nine dilution recipes are printed on every label.
Body wash and hand soap recipe → | Facial cleanser recipe → | What our label actually says →
Yohan & Alex
Co-founders, Whole Naturals
For external use only. Keep out of reach of children. Discontinue use if irritation, redness or discomfort occurs.
