Procter & Gamble issued a voluntary recall of more than 30 aerosol spray products, including dry shampoo and dry conditioner, due to concern over the levels of benzene, a chemical known to cause cancer.

The company also recalled certain Old Spice and Secret aerosol spray antiperspirants and Old Spice “Below Deck” spray products last month due to the presence of benzene. P&G began to review the rest of its aerosol products after the initial recall and found “unexpected levels” of benzene from the propellant that sprays the product out of cans, according to a Friday statement.

Products under the Pantene, Aussie, Herbal Essences, Hair Food and Waterl<ss brands are included in the recall. 

“The vast majority of our products are not part of this recall, including mousses, hairsprays, liquid shampoos, liquid conditioners, styling products, treatments, and unaffected aerosol dry shampoo spray,” P&G said. 

► P&G recall:P&G recalls specific Old Spice and Secret aerosol spray antiperspirants

► US recalls:USA TODAY's database of publicly available recall data

The human carcinogen benzene is “ubiquitous in the environment,” according to the U.S. Food and Drug Administration, but too much exposure can result in various life-threatening cancers including leukemia and blood cancer of the bone marrow, as well as blood disorders. Humans can be exposed through inhalation, orally or through the skin.

Modeling from the FDA found daily exposure to benzene from P&G’s recalled products is not likely to cause adverse health consequences. P&G has not received any reports of illnesses related to the recall. 

Recalled items can be identified by their production code, which is found at the bottom of the spray cans. Recalled P&G products are packaged inside aerosol cans and include:

The recalled products were distributed nationwide through retail outlets and online. P&G has alerted retailers and asked them to remove the recalled products from shelves. 

Customers who purchased any of these products are advised to stop using them and throw them away. They can get check the affected brands’ websites to learn more about how to receive reimbursement.

Follow USA TODAY reporter Bailey Schulz on Twitter: @bailey_schulz.