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There is only a small window of opportunity to correct the infantâs skull. As the rate of skull growth is faster in the early ages, helmet therapy is most effective between the ages of 3 to 7 months. However, helmets are still effective until the infant is 12 months old.
This varies but some parents have seen improvement after only two weeks of the Ballert Helmet. Average helmet is typically worn for 4-6 months based on the rate at which the childâs head grows and the severity of the flattening.