Of course, underglaze color is better.
Colored glaze is mostly composed of lead containing compounds, which are toxic to humans and should be avoided from ingestion. Glazed glaze can easily dissolve lead in acidic soup and vegetables into the human body, and excessive accumulation can lead to poisoning. Underglaze color does not dissolve lead, making it absolutely safe to use as tableware.
It is generally believed that underglaze colored tableware is safer! The production methods of ceramic tableware are divided into three types: overglaze color, underglaze color, and underglaze color. overglaze color is a layer of colored glaze on top of transparent glaze, which will have a noticeable concave convex feeling when touched by hand. underglaze color is first decorated with colored decorations, and then coated with a layer of transparent colorless glaze as a whole. After use, it is best to clean ceramic tableware in a timely manner to avoid oil stains, tea stains, and food residues remaining on it for too long, which can extend its service life. If it is a newly purchased ceramic tableware, it is recommended to soak it in salt water or warm water for a moment first. This way, it is not easy to break when used and can also remove most of the toxic substances.