Si Qian mud is basically non-toxic. Si Qian mud, also known as mucus, has a normal taste and is not toxic. As long as you don't eat it, you'll be fine, and the key material of mucus is borax, which is often called paper clay. Borax is used in cosmetics and detergents and has its own disinfection effect. So don't worry, it's normal to play with glue and white glue, which will smell and do no harm to human body.

Characteristics of paper clay:

1, various colors, non-toxic, non-sticky, good flexibility and strong plasticity.

2, the work does not need to be baked, naturally air-dried, and there will be no cracks after drying.

3. The work can be colored after drying and setting (it can be colored with watercolor or advertising color), and can be colored with watercolor, oil painting pigment, acrylic pigment, nail polish, etc. , very inclusive. When the color dries, it can be preserved for a long time by varnish.

4, high adhesion with other materials, whether paper, glass or lace, beads have excellent adhesion.

5. As paper clay will air-dry naturally when exposed to air, it will not dry as long as it is not exposed to air.

6. The drying speed depends on the size of the work. The smaller the work, the faster the drying speed, and the greater the drying speed. The surface drying time is generally about 3 hours.

7. Because paper clay, especially ultra-light soil, can obviously reflect the lines pressed on the material, many people apply it to the production of handprints, such as wedding couple handprints, baby growth handprints, etc., so it is also called hand-foot inkpad.