Hand Soap Pinprick Problem - Chemists Corner

Formulating

Hand Soap Pinprick Problem

Posted by Halim on May 19, 2020 at 10:52 am

We are working on hand soap our formulation
sles(%70). 65
betain. 40
levanol Hb. 1.5
peg 7. 10
parfume. 2
salt. 30
citric acid(%20). 2.5
ph range 5.5-6.1
water. 849

ı dont understand why we have this problem
maybe our mixing time or raw materials adding time is wrong
I am waiting for your advice
Best Regards

belassi replied 3 years, 12 months ago 2 Members · 8 Replies
8 Replies

belassi

Member
May 19, 2020 at 3:48 pm

The formula makes no sense, does not add up to 100% therefore it’s useless to comment.
Halim

Member
May 19, 2020 at 4:17 pm

Dear Belassi
the formulation totally 1 kg ıf i did not calculate wrong
we have hand irtitation after cleaning back of the hands
your advice is very important for me
how can we solve this problem
Halim

Member
May 19, 2020 at 4:17 pm

Sorry irritation
belassi

Member
May 19, 2020 at 7:33 pm

You have an ASM of around 4 or 5% which is insufficient surfactant.
I assume ‘PEG 7’ is PEG-7 glyceryl cocoate. If so, 1% is correct.
I have NO idea what “levanol HB” is. Nothing else seems out of order so maybe that’s the problem.
Halim

Member
May 19, 2020 at 8:52 pm

Levenol HB is glycereth-2 cocoate I use it for foam and viscosity effectivnes
belassi

Member
May 19, 2020 at 11:59 pm

From the given ingredients the only possible problems I can see are the fragrance and, if it is exactly as stated, bacterial contamination due to no preservative, resulting in contact dermatitis.
Halim

Member
May 21, 2020 at 4:40 pm

Dear Belassi
today ı add %0.1 Microcare IT from Thor (CIT/MIT) In can biocide to the hand soap formulation
But ı still have irritation problem

May be ı made mistake on mixing times
may have your opinion about mixing times
Best Regards
belassi

Member
May 21, 2020 at 4:45 pm

chloromethyl/methylisothiazolinone - you chose just about the most nasty, horrible, preservative available. A preservative that is known to cause atopic dermatitis. I strongly suggest you get proper professional help.