what do you recommend for colouring cold pressed soap? There is different pigment and colour options not sure which to go with. And lastly what are options for a light exfoliating? I want to go with something not too sharp just nice and light.
I believe you meant cold processed soap, not cold pressed. Regardless, you could try colored mica but I have had issues with it in the past, I tried an aquamarine blue colored mica and my soap turned a military green color! I know it was a reaction either to the lye and/or the heat generated during saponification, probably the lye to be honest.
I have used Red Palm Kernel oil and have gotten a nice golden yellow color similar to the color of the original DIAL deodorant soap.
Personally I am not much in the "Let's color every batch of soap" camp as some are. Probably the difference between XX and XY chromosomes... LOL!
I do use kaolin clay for a better skin feel, plus I have been adding Titanium Dioxide as a whitener to my soaps. TiO2 really brightens the soap up and gives a nice clean visual eye appeal. Some will disagree with the use of TiO2 but I happen to appreciate what it contributes to the overall appeal of the soap. It is very fine consistency, like talcum powder or "00" Flour, so be careful when measuring it.
The are some natural earth clays with nice muted colors such as Purple Brazilian, Dark Red Brazilian, Yellow Silt Clay, French Green Clay, Rose Clay, etc. Some makers dissolve the clay in the melted oils, but it is recommended to dissolve the clay in distilled water instead, at least according to The Soap Queen website.
Here's a link:
How to Use Clay in Bath & Beauty Projects
Here's a quote from that page:
"Clay is a versatile ingredient for a wide variety of bath and beauty projects. It’s probably most well known for clay face masks, but can also be used in cold process soap and scrubs. It adds color and various oil absorbing properties."
"Clay in Cold Process Soap
Because of their ability to absorb liquid, including oil, clays are a popular additive for soap created for oily skin. If you’d like to add clay to your soap projects, keep those properties in mind; clay also absorbs moisture in soap. To compensate for the moisture clay absorbs, disperse it in distilled water (rather than oil) for cold process soap recipes. The usage rate is 1 tablespoon distilled water per teaspoon of clay. In general, a usage rate of about 1 teaspoon of clay per pound of soap is a great place to start for cold process soap recipes. Feel free to use more if you’d like, just keep in mind clays also speed up trace. The more you use, the faster your soap will become thick.'
I dissolve my clay a little differently, I just dissolve it in the lye water instead of 1 tsp. clay to 1 Tbsp. distilled water. That way it doesn't really affect the trace that much.