August 07, 2025 1 min read
Slime is a non-Newtonian fluid made by cross-linking polyvinyl alcohol (PVA) glue with a tiny amount of borate ions (from borax or saline solution). The resulting three-dimensional polymer network traps water and air bubbles, giving slime its unique ability to stretch slowly yet resist sudden force. We use formaldehyde-free PVA glue, micro-dose borate activator (< 300 ppm), cosmetic-grade pigments and fragrances, plus food-grade glycerin for softness. See our detailed blog post for the full chemistry breakdown and safety standards we follow.
No. When produced correctly, slime is non-toxic and meets international toy-safety limits for boron (< 300 ppm). We never use industrial borax “over-activator,” harsh solvents, or heavy-metal colorants.
Yes—under supervision. Ages 3–6 should be monitored to avoid ingestion; ages 7+ can play independently. Always wash hands before and after play and avoid contact with eyes or mouth.
All ingredients are cosmetic-grade and skin-safe, but rare allergies may exist (e.g., fragrance oils). Test a pea-sized amount on the inside of your wrist for 15 minutes. If irritation occurs, discontinue use and contact us.
Borate ions are essential for the stretch-and-squish texture, but excessive amounts can cause dryness or irritation. Our lab checks every batch so you get perfect drizzles without skin stress.
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