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Speaking generally, these are the dimensions of the top three soap bars. Again there are no rules for exact type or weight or shape for these soap bars.

The Guest/Hotel/Sampler Soap Bar
This bar generally is 1 to 2 inches in length; 1 to 1-1/4 inches in width; and 1/4 inch in thickness.The weights of these soap bars are less because they are smaller bars in size and weigh anywhere from a half ounce (14 grams) to two ounces (57 grams). This weight is good for creating multi-soap bar sample packs of your product lines, hotels for single-use, bath fizzies, aromatics which dissolve quickly releasing your perfect scents.
The Hand/Face/Beauty Soap Bar
This bar generally is 3 inches in length; 2 inches in width; and 1 inch in thickness. These bars generally weigh 3.0 to 4 ounces or 85 to 114 grams. This weight is a great size to cast your soap formula, bath fizzies, pumic slurries that form a solid state, moisturizing bars, hair care shampoo and conditioner bars.
The Bath/Body/Family-size/Industrial/Laundry Soap Bar
This bar generally is 4 to 6 inches in length; 3 inches in width: and 1 to 1-1/2 inches in thickness. These bars generally weigh 4.5 to 8 ounces or128 to 227 grams. These larger sized bars that weigh more require more soap formula. These bars are used to make larger bars for animal-care soaps for pets, horses, and any livestock. We use an industrial grade silicone to create molding containing 6 to 12 cavities because of their larger weights.

Next, we are going to discuss calculating the weight and dimension of your soap bar.

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