In recent years, slime has often been referred to as a “stress-relief toy.” Thanks to its soft, stretchy texture and visually appealing appearance, slime has become very popular among both children and adults. However, not all slime products on the market are manufactured according to the same standards, and the quality of slime products can vary significantly.

Quality Differences in Slime Products

Investigations have found that some irresponsible manufacturers add borax to slime formulas in order to reduce production costs. Some products also use low-quality glue, which may contain high levels of formaldehyde, as well as cheap fragrances and colorants that could include unsafe chemical substances. If the raw materials come from unreliable sources or have not been properly tested, they may pose potential health risks to children. Tests conducted by professional laboratories on slime products purchased from both online marketplaces and physical retail stores revealed that some samples contained excessive levels of boron. In certain cases, the boron content exceeded European safety standards by several times. Therefore, when purchasing slime products, consumers and buyers should pay close attention to product safety and quality, rather than simply choosing the lowest-priced option.

Potential Risks of Unsafe Slime

Long-term contact with slime that contains borax, formaldehyde, or other harmful chemicals may cause skin irritation or allergic reactions and could create long-term health concerns. This is especially true for children with sensitive skin. In addition, accidental ingestion of slime may pose greater health risks. Because children typically play with slime using their hands, hand-to-mouth contact may occur during play.

For this reason, parents and buyers should ensure that the slime products they choose meet relevant safety standards.

International Safety Regulations

Today, many countries have established strict toy safety regulations, including those that apply to slime products. For example, the international toy safety standard ISO 8124-3 sets limits for migratable elements, including boron, in toys. These regulations are designed to ensure that toys remain safe for children during normal use. Consumers are advised to purchase slime products from reliable suppliers and reputable manufacturers, and to avoid products that do not provide manufacturer information, testing reports, or proper labeling.

Safe Play Tips for Children

Even when slime products meet safety standards, children should still follow proper play guidelines. Children should play with slime under adult supervision, avoid rubbing their eyes or putting slime in their mouths, and wash their hands with soap after playing. In addition, slime toys are not recommended for children under three years old.

Choose Slime Products with Safety Certifications

When purchasing slime toys, it is recommended to choose products that have passed international safety certifications, such as:

• CPC (Children’s Product Certificate)

• ASTM F963 Toy Safety Standard

• EN71 European Toy Safety Standard

Products that comply with these certifications offer greater assurance in material safety, product quality, and manufacturing standards. However, for SISLAND, these certifications are only the baseline—we place even greater emphasis on safety and quality.