Formulating

Intimate syndet bar

Posted by Pima_Brazil on February 21, 2020 at 1:15 pm

I am developing an intimate syndet bar for women and I’m having a hard time to achieve hardness. My formula is:

Shea butter	3,0%
Cetearyl alcohol	6,0%
Bee wax	2,0%
Stearic acid	5,0%
Sodium cocoyl isethionate (SCI)	33,0%
Sodium coco sulfate	23,0%
Glycerin	8,0%
Cocamidopropyl betaine	10,0%
Sodium lactate	3,0%
Lactic acid 85%	0,5%
Stryphnodendron adstringens bark extract	3,0%
Fragrance	3,0%

Heat phase I:

Shea butter

Cetearyl alcohol

Bee wax

Stearic acid.

Heat phase II
Sodium cocoyl isethionate (SCI), Sodium coco sulfate, Glycerin, Cocamidopropyl betaine

Mix phase I and II and add the other ingredients:
Sodium lactate, Lactic acid 85%, Stryphnodendron adstringens bark extract, Fragrance.

The finished bars after drying are way to soft.

Could you please help me??? I would appreciate!!!!

Thanks in advance. Best regards,

Flavio

Pima_Brazil replied 4 years, 2 months ago 4 Members · 8 Replies

8 Replies

Fekher

Member
February 21, 2020 at 2:18 pm

@Pima_Brazil try to reduce glycerin and CAPB levels.
Pima_Brazil

Member
February 21, 2020 at 2:39 pm

Fekher, thanks! Should I reduce by half these and increase CSI and SCS?
Fekher

Member
February 21, 2020 at 7:44 pm

I have not really idea for the precise amount to reduce so you should work on it , but as start point try in total 10 % (glycerin and CAPB) and as you said it seems good idea to increase the level of CSI and SCS.
Pima_Brazil

Member
February 21, 2020 at 8:14 pm

Thanks a lot!!!! Best regards!!!!
Cafe33

Member
February 21, 2020 at 11:13 pm

The amount of liquid products in your formulation is absurd.

Glycerine is one of the worst things you can add to a Syndet bar in my experience. It will easily absorb moisture from the air and make your bar soggy.

Cetyl Alcohol at 5% will do wonders for softness. (Better than Cetearyl)

Try to aim for around 70% in Surfactants and Waxes. Dove uses around 25-27% of Stearic Acid in their formulation and around 45-47% SCI with 10-12 % Real Soap.

I think you should increase your Stearic Acid %.

CAPB - around 6-8% would be a more appropriate range.

You should also consider adding a chelating agent as well as a salt such as Sodium Chloride to also help the bar dry faster after use.

3.0 % Fragrance sounds very high especially for an intimate product. And from a formulation standpoint it may cause you many headaches.
Pima_Brazil

Member
February 21, 2020 at 11:20 pm

Cafe33, thank you so much for your inputs. I will do that. Best regards,
Flavio
chemicalmatt

Member
February 22, 2020 at 12:21 am

I can’t pass this one up: “can’t achieve hardness” in an “intimate soap”? Insert punchline please.
Pima_Brazil

Member
February 22, 2020 at 10:36 am

Chemicalmatt,
I give you credit for that LOL