Are DEHP replacement plasticizers safer for a developing baby's brain?

What's actually in it

When DEHP was restricted in children's products, manufacturers switched to alternative plasticizers like DINCH, DEHT, and TOTM. These newer chemicals are now in baby toys, teething rings, food packaging, and medical devices. They make plastic soft and flexible, just like DEHP did.

A baby's brain grows faster than any other organ. During the first years of life, billions of nerve connections form. Chemicals that interfere with this process can have lasting effects.

What the research says

A 2026 study in Toxicol Sci tested DEHP and three of its replacement plasticizers on human neurospheres, lab-grown 3D clusters of brain cells that mimic how the developing human brain works. This is a much more realistic model than flat cell cultures.

DEHP caused clear brain cell damage, which was expected. But the replacement chemicals weren't harmless either. Some alternatives caused different types of nerve cell damage, disrupting cell growth, migration, or the formation of connections between neurons.

The pattern of damage varied by chemical. One replacement might spare the pathway that DEHP harms, only to damage a different one. The researchers described it as trading one problem for another rather than solving the original issue.

For parents, the safest approach is choosing toys and feeding products made from natural rubber, solid wood, or silicone instead of any softened plastic, regardless of which plasticizer it contains.