Traces of a cancer-causing chemical were found in dry shampoo and conditioner by Procter & Gamble, prompting a recall

• Procter & Gamble recalled 32 dry shampoo and conditioner sprays due to chemical contamination.
• The company detected traces of benzene, a known carcinogen, in some batches of the sprays.

Procter & Gamble has opted to recall more than 30 dry shampoos and conditioner sprays after an internal review found traces of benzene, a cancer-causing chemical, in some products.

The announcement, issued Friday, follows a separate voluntary recall of some P&G antiperspirants and deodorants. After an independent lab detected benzene in some Secret and Old Spice underarm sprays last month, P&G began a review of all of its aerosol products.

Although benzene is not a listed ingredient in any of P&G's products, the carcinogen may be used in the manufacturing process. The review linked "unexpected levels of benzene" to the propellant used to spray the products out of their cans.

Exposure to benzene over a prolonged period can cause leukemia and other blood disorders, according to the Center for Disease Control and Prevention.

However, P&G said in a statement that the products they recalled likely will not expose people to levels of benzene high enough to cause health issues, considering how often consumers might be using dry shampoo.

"To date, The Procter & Gamble Company has not received any reports of adverse events related to this recall and is conducting this recall out of an abundance of caution," the company wrote in a press release.

Recalled items include products by Pantene, Herbal Essences, Hair Food, Old Spice, and Aussie brands. The recall only affects certain batches of the products, as indicated by production codes listed in the company announcement.

Here's the full list:

• Waterless Dry Conditioner Weightless Smooth (3.6 oz) with UPC 37000543954 with a production code in the range of 0002-0248 or 9298-9350.
• Waterless Dry Conditioner Instant Moisture (3.6 oz) with UPC 37000543831 with a production code in the range of 0009-0069 or 9297-9350.
• Waterless Dry Conditioner Weightless Smooth (.98 oz) with UPC 37000544111 with a production code in the range of 0084-0085 or 9284-9361.
• Waterless Dry Conditioner Instant Moisture (.98 oz) with UPC 37000544227 with a production code in the range of 0017-0100 or 9283-9284.
• Waterless Dry Shampoo No Residue (3.7 oz) with UPC 37000543787 with a production code in the range of 0004-0357 or 9291-9344.
• Waterless Dry Shampoo No Residue (1 oz) with UPC 37000543978 with a production code in the range of 0175-0176 or 9295-9297.
• Pantene Sultry Bronde All in One Luxury Mist (4.9 oz) with UPC 80878188710 with production code 0038.
• Pantene Smooth Talker Dry Conditioning Oil (3.9 oz) with UPC 80878192397 with a production code in the range of 0183-0365 or 1042-1046.
• Pantene Mist Behaving Dry Conditioning Mist (3.9 oz) with UPC 80878190898 with a production code in the range of 0048-0336 or 1008-1218 or 9247-9349.
• Pantene Mist Behaving Dry Conditioning Mist (3.9 oz) with UPC 80878188758 with a production code in the range of 9108-9303.
• Pantene Mist Behaving Dry Conditioning Mist (1 oz) with UPC 80878188765 with a production code in the range of 0107-0262 or 9112-9288.
• Pantene Gold Series Instant Nourishing Spray (4.9 oz) with UPC 80878188987 with a production code in the range of 0307 or 9263-9266.
• Aussie Smooth Vibes Dry Conditioner (4.9 oz) with UPC 381519187957 with production code 0021 or 1038 or in the range of 9294-9325.
• Aussie Petal Soft Dry Conditioner (4.9 oz) with UPC 381519187544 with a production code in the range of 9196-9246.
• Aussie Sleekend Warrior Dry Conditioner (4.9 oz) with UPC 381519187537 with a production code in the range of 0014-0062 or 9198-9349.
• Herbal Essences Blue Ginger Refresh Dry Shampoo (4.9 oz) with UPC 190679001498 with a production code in the range of 9047-9072.
• Herbal Essences White Grapefruit & Mint Dry Shampoo (4.9 oz) with UPC 190679000262 with a production code in the range of 0015-0314 or 1004-1019 or 9028-9348.
• Herbal Essences White Strawberry & Sweet Mint Dry Shampoo (4.9 oz) with UPC 190679000255 with a production code in the range of 0167-0308 or 1105-1106 or 9049-9348.
• Herbal Essences Cucumber & Green Tea Dry Shampoo (4.9 oz) with UPC 190679000248 with a production code 0093 or 1075 or in the range of 9029-9294.
• Herbal Essences Cucumber & Green Tea Dry Shampoo (1.7 oz) with UPC 190679000330 with a production code in the range of 0036-0329 or 1019-1098 or 9023-9312.
• Pantene Dry Shampoo No Water Refresh (4.9 oz) with UPC 80878177042 with a production code in the range of 9009-9058.
• Pantene Dry Shampoo Sheer Volume (4.9 oz) with UPC 80878185276 with a production code in the range of 9025-9260.
• Pantene Never Tell Dry Shampoo (4.2 oz) with UPC 80878188727 with a production code in the range of 0006-0364 or 1074-1133 or 9157-9329.
• Aussie After Hours Dry Shampoo Texture Spray 4.9 oz) with UPC 381519187834 with a production code in the range of 0139-0140.
• Aussie Tousle Hustle Dry Shampoo (4.9 oz) with UPC 381519187285 with a production code in the range of 0013-0300 or 1038 or 9189.
• Aussie Bounce Back Dry Shampoo (4.9 oz) with UPC 381519187278 with a production code in the range of 0013-00357 or 1018-1123 or 9189-9345.
• Aussie Clean Color Protect Shampoo (4.9 oz) with UPC 381519187360 with a production code in the range of 9047-9123.
• Aussie Clean Texture Dry Shampoo (4.9 oz) with UPC 381519187285 with a production code in the range of 9072-9176.
• Aussie Clean Volume Dry Shampoo (4.9 oz) with UPC 381519187278 with production code 9085.
• Hair Food Coconut Dry Shampoo (4.9 oz) with UPC 37000876717 with a production code in the range of 0027-0192 or 9007.
• Old Spice Fiji Dry Shampoo (4.9 oz) with UPC 37000779421 with a production code in the range of 9046-9228.
• Old Spice Pure Sport Dry Shampoo (4.9 oz) with UPC 37000785170 with a production code in the range of 9040-9239.