Washington ? Government safety officials are looking into a handful of reports of severe rashes caused by new types of Pampers diapers.

The Consumer Product Safety Commission started an investigation this week following complaints of babies and toddlers suffering severe and persistent diaper rashes and blisters that resemble chemical burns.

In March, Procter & Gamble launched new versions of its Swaddlers and Cruisers diapers in the U.S.

The thinner diapers use the company’s Dry Max technology to replace the paper pulp previously used. Parents’ groups blame the change for skin problems.

The company responded in a statement that these claims are “completely false,” and that it has received less than two complaints about diaper rash for every one million Pampers diapers sold.