This is a set of three stamps, that imprint three different kinds of goggle eyes in to CP or HP soap.
Not intended for melt and pour (MP) soaps, as they are usually too hard.
After stamping, brush the lines with a mixture of mica and alcohol. I would use a soap shaver on the face if my brush skills are not clean enough.
Stamps are made out of food-safe PETG, and can be pressed in to soap by hand for soft soaps. A soft mallet can be used if the soap is too hard. Use an Alcohol spray prior to stamping to reduce the amount of soap that may stick to the stamp.