Etsy Site: http://www.evermoresoap.etsy.com/
On the site above is a paint brush and rubber stamp soap that is handmade and marketed as safe and non toxic and she has listed the ingredients.
For those who are super sensitive this might be an answer for you...... I have not ever used it so can't vouch for it. When I see a neat handmade item or product on Etsy I like to put their site up so others can "check it out".