As long as your are using Palm Oil and NOT palm kernel oil or palm kernel flakes (also known as PKO), there is no impact of over-cleansing (which is what causes the itching, I think) in combination with Coconut Oil. PKO is like Coconut Oil (and so is Babassu Oil), but Palm Oil is more like the animal fats, such as tallow, lard, and Hydrogenated Soy Oil (also known as Soy Wax, even though it is not a true wax.) Unless a person has an allergy to palm, and that could be pretty bad considering it is added to so many food products worldwide, subbing Palm Oil (a hard oil because in cool temperatures it is solid) for the soft oils (which remain liquid even when cooled) should not produce itching after using the soap.
As far as recommended percentages, it's all over the chart if you do a search for "the" recommended percentage in soap. I have seen sites that suggest "up to 33%", but there are plenty of soapers who use larger percentages and some who make 100% palm soap. So it's really up to the discretion of the soapmaker.
Here is one of many 100% palm oil soaps that one can find with an internet search: 100% Palm Oil Soap Recipe - HerbAlcochete
And here is a thread about palm oil percentages used by some of our SMF members: High palm oil soap question
Am I the only person who have used sesame oil in soap? is it considered bad? not good output? whats the issue?
The soap calculator perfectly tells everything so I thought it was not an issue. Could you tell me pls if I should change?
Also Im using palm oil around 30%