Gentle liquid soap for shower

SoapMakingForum

Help Support SoapMakingForum:

AliOop

Lifetime Supporter
Joined
Nov 15, 2018
Messages
3,952
Reaction score
6,243
Location
US
Thank you for the detailed pics and updates, @Tara_H! This has been on my Try List for sooo long - now you have inspired me, and I simply must make this!

Was actually going to give it a go tonight, but a slip of the drill while installing a blind just put a screw deep into the pad of my index fingertip. Yowsa! Gotta wait for the bleeding to stop, darn it. Thankfully it's the non-dominant hand, and I am up-to-date with my tetanus shot. 😆
 

Tara_H

Mad scientist
Supporting Member
Joined
Jun 11, 2019
Messages
639
Reaction score
1,871
Location
Ireland
Thank you for the detailed pics and updates, @Tara_H! This has been on my Try List for sooo long - now you have inspired me, and I simply must make this!

Was actually going to give it a go tonight, but a slip of the drill while installing a blind just put a screw deep into the pad of my index fingertip. Yowsa! Gotta wait for the bleeding to stop, darn it. Thankfully it's the non-dominant hand, and I am up-to-date with my tetanus shot. 😆
Oh no! Hope it heals quickly for you!

Let me know if you like this soap as much as I do when you give it a try :)
 

Kcryss

Supporting Member
Joined
Dec 10, 2019
Messages
762
Reaction score
532
Location
Colorado
Does anyone know what the high amount of castor oil provides in this recipe? Just curious. :)
 

ResolvableOwl

Well-Known Member
Joined
Jan 14, 2021
Messages
411
Reaction score
934
Location
Germany
My guess: you don't have to be stingy with castor, since “soft, slimy and soluble”. Unlike with bar soap, these are qualities that are highly valued in LS. And its lather boost is always welcome! Castor is also clarity friendly (however, this is unnecessary in case of GLS).

At least these are the reasons why many of my LSs contain 10…20% castor. Haven't challenged these reasoning yet if it is worth to further increase castor content. But lovely LSs are possible without any castor at all.
 

Juggsy

Supporting Member
Joined
Apr 23, 2021
Messages
35
Reaction score
91
Location
Brisbane
Does anyone know what the high amount of castor oil provides in this recipe? Just curious. :)
I assume it's for lathering reasons.

It's good in transparent LS.

Castor oil differs from most other soft oils in its fatty acid composition; 80 to 85 percent of castor oil is ricinoleic acid.

Castor also stimulates the production of collagen and elastin. So maybe it's high in castor for that?

One other reason might be castor oil traces quickly.
 

Zany_in_CO

Saponifier
Joined
Mar 9, 2017
Messages
5,788
Reaction score
5,149
Location
SE Denver CO
Does anyone know what the high amount of castor oil provides in this recipe? Just curious. :)
To add to Owl's comments above, 3-5% Castor is the recommendation for hard bars. Any higher, and you risk having a sticky result.

Due to its high latherability, in LS, it can replace Coconut or PKO at a rate of 10-30% of total oils in a liquid shampoo. It also has nutritional qualities all by itself. TIP: Add therapeutic essential oils to the castor oil in your recipe an hour or more before soaping. In its presence, the EOs will be quickly absorbed by the body and scalp. :thumbs:
 
Last edited:

Aromasuzie

Well-Known Member
Joined
Nov 12, 2019
Messages
104
Reaction score
163
Location
New Zealand
@Zany_in_CO , I think you'll find that the essential oils will be quickly absorbed due to skin hydration. Castor oil would actually slow down absorption due to its viscosity :)
 

Zany_in_CO

Saponifier
Joined
Mar 9, 2017
Messages
5,788
Reaction score
5,149
Location
SE Denver CO
@Zany_in_CO , I think you'll find that the essential oils will be quickly absorbed due to skin hydration. Castor oil would actually slow down absorption due to its viscosity :)
Actually I've used the technique of adding EOs to castor oil before soaping (CP hard bars) with good results for scent retention. Today, I happened to be researching liquid shampoo as a scalp treatment for stimulating hair growth. I have not tried it yet.
Source: The Natural Soap Book by Susan Miller Cavitch
Castor oil, like avocado oil, is active within your final soaps. This thick, viscous oil is soothing and lubricating and is absorbed quickly by the body. In its presence, less easily aborbed materials are more likely to be absorbed. This is an advantage if the other ingredients are pure and therapeutic.
If this isn't the case in your experience @Aromasuzie, I stand corrected and thank you for your input. :thumbs:
 
Last edited:

Aromasuzie

Well-Known Member
Joined
Nov 12, 2019
Messages
104
Reaction score
163
Location
New Zealand
@Zany_in_CO Thank you for that info. As an Aromatherapist, we were taught that the more viscous the oil, the lower the rate of essential oil absorption into the skin. Cold pressed castor oil on it's own does not absorb into the skin at all. Thick and viscous does not equal quickly absorbed. If the carrier oil is not being absorbed, but are trapped within the oil, then the essential oils would take longer to evaporate. As soon as other carrier oils are added, viscosity would be reduced and it could be more easily absorbed or evaporated that way.

I searched through my books and found "Liquid Sunshine, Vegetable oils for Aromatherapy by Jan Kusmirek". Under Castor oil, it states "it does have emollient properties on the skin, and due to its viscosity can be considered where moisture needs to be locked in or out...it's many industrial uses include softening materials, treating leather, waterproofing and so on. It finds little use in Aromatherapy, being very thick and viscous. When sulphonated or hydrogenated, it does form the base of a common dispersant in water and so occurs carrying essential oils in many natural bath oils, breath fresheners etc. Hydrogenated forms are used as emulsion stabilisers."

I use castor oil in all my cp recipes at 5%. Next time I make soap, I'll try adding the essential oils to the castor oils first and see if it makes any difference. It will certainly be an interesting experiment.
 

Zany_in_CO

Saponifier
Joined
Mar 9, 2017
Messages
5,788
Reaction score
5,149
Location
SE Denver CO
When sulphonated or hydrogenated, it does form the base of a common dispersant in water and so occurs carrying essential oils in many natural bath oils, breath fresheners etc.
Thank you for that information. I had forgotten about sulphonated castor, aka Turkey Red Oil! It is miscible in water and, as such, usable in liquid soap as an additive. :thumbs:

I look forward to reading results of your experiment. 👀 😊

I make more LS than CP hard bars these days. The exception is ZNSC. My favorite combo is 5% castor + 10% coconut + 85% olive which I make often for myself and a few special requests.
 
Last edited:

Aromasuzie

Well-Known Member
Joined
Nov 12, 2019
Messages
104
Reaction score
163
Location
New Zealand
@Zany_in_CO , I've heard of Turkey Red Oil, mystery solved :) Your ZNSC recipe is on my list to try! I hope you don't mind me asking why you've made the change from cp to liquid soap? I find it quite fascinating how we head down one path, only to be diverted by another.
 

Zany_in_CO

Saponifier
Joined
Mar 9, 2017
Messages
5,788
Reaction score
5,149
Location
SE Denver CO
I hope you don't mind me asking why you've made the change from cp to liquid soap?
Haha It's just that I have way more CP soap on hand than I'll ever use up! Plus, I have foamers at every sink, I make my own hair & body shampoo, laundry soap, etc. and it seems I'm always running out of one LS or another.
I find it quite fascinating how we head down one path, only to be diverted by another.
Me too! :thumbs:
 

ResolvableOwl

Well-Known Member
Joined
Jan 14, 2021
Messages
411
Reaction score
934
Location
Germany
Wow. Just add a fake barcode, and anyone will believe you that it's store bought!

Type best-before dates on labels with a mechanical typewriter to create maximum illusion.
 
Top