Equipments Needed

Scale, Cutting board, Set of measuring spoons, Metal whisk, Large knife, Rubber spatula, Ramekin for fragrance oil, Soap mold, Large glass liquid measuring cup

Cut and Weigh

Place the glass measuring cup on the scale and zero out the weight. Cut the melt and pour soap base into small chunks and place them into the container until you've got the desired amount.

Melt the Soap Base

Heat the soap in the microwave, starting with just a minute at a time. Remove the soap and stir it. Repeat heating the soap base a minute or so at a time until all the chunks are gone, and the soap is completely melted. It can be melted in a double boiler as well.

Add Fragrance

Measure your fragrance or essential oil into the ramekin. Ideally, It is 0.4-ounces of fragrance per pound of soap. (Generally, you can use about 2 to 3 percent per weight of the soap.) You can go up or down from there if you're using a light or strong fragrance oil.

Add Color

If you want to add some color to your soap, make sure you use soap/skin-safe dyes, micas or natural colorants.

Also, be aware that soap-safe dyes are much weaker than candle dyes. You will need to use more than you would in the same amount of wax.

Stir The Melted Soap

Gently stir the melted soap to completely incorporate the fragrance and color.

Don't stir too hard or you'll get bubbles in the soap. If you do get bubbles, a light spritz of rubbing alcohol from a spray bottle gets rid of them.

Pour

Slowly pour the soap into the mold. Try not to splash the soap and, once again, you want to avoid bubbles if possible. You're done for now. Carefully move the mold to a safe place, cover with plastic wrap.

The soap should be hard enough to unmold in a few hours. You can hurry this along by putting the mold in the refrigerator, but don't put it into the freezer.

Unmold the Soap

When the soap is completely hardened, you should be able to pop the bars out of the mold. Some molds release easily but others may be more difficult. Tapping the mold firmly with the palm of your hand or a large spoon sometimes helps. You can rub off or trim off any imperfections with a cloth or small knife.