The humble receipt—a small piece of paper we handle daily without a second thought—has become the subject of increasing scientific scrutiny and regulatory action. From California's Proposition 65 to Washington State's groundbreaking phenol ban, governments around the world are taking steps to address the health risks associated with thermal receipt paper.

This article examines the health concerns, regulatory landscape, and industry response surrounding receipt paper, offering businesses and consumers a roadmap for navigating the transition to safer alternatives.

The Problem with Thermal Receipt Paper

Most receipts are printed on thermal paper, which relies on a chemical coating containing color developers to produce text when heated. Historically, Bisphenol A (BPA) was the primary developer used. When health concerns emerged, manufacturers largely switched to Bisphenol S (BPS)—a chemical that, according to mounting evidence, poses similar risks.

A 2023 report co-released by Toxic-Free Future revealed that almost 80% of paper receipts tested from large U.S. retailers contained BPS. This represents what scientists call a "regrettable substitution"—replacing one harmful chemical with another that has comparable toxicity.

Health Impacts: What We Know

Both BPA and BPS are endocrine-disrupting chemicals (EDCs) that can interfere with hormone function. Scientific research has linked exposure to:

• Reproductive harm and fertility impairments
• Increased risk of breast and prostate cancers
• Obesity and Type II diabetes
• Cardiovascular disease
• Developmental and neurological effects

A 2025 study published in Environmental Science: Advances analyzed thermal paper receipts and found BPA and BPS in 99% and 100% of samples, respectively. BPA concentrations ranged from 1.98 to 1,061 μg per gram of paper.

The European Food Safety Authority (EFSA) has set a total daily intake limit for BPA at 0.0002 μg per kg per day. The study found that some exposure levels exceeded this threshold, indicating potential health risks. Hazard index values surpassed safe thresholds, particularly for workers.

Skin Absorption: The Direct Route

Unlike many toxins that require ingestion, BPA and BPS can be absorbed directly through the skin upon contact with thermal paper. Research shows:

• Chemicals transfer to skin within seconds of handling a receipt
• Longer contact equals greater exposure
• Hand sanitizer use increases absorption—alcohol breaks down the skin's barrier

A study from the UAE found that 60% of receipt samples contained BPA levels above the EU's acceptable limit. Cashiers have been found to have 2.5 times higher urinary BPA levels than control groups.

The Global Regulatory Landscape

Governments worldwide are taking action to restrict bisphenols in thermal paper:

United States

California Proposition 65:

• BPS was added to the Prop 65 list in 2023
• Effective December 29, 2024, products containing BPS require a warning label
• There is no established safe-harbor limit for BPS—any detectable amount requires a warning
• Over 200 companies were targeted in the first half of 2025 for BPS violations

Washington State:

• Became the first U.S. state to ban bisphenols as a class in receipt paper
• Effective January 1, 2026, prohibits phenols over 200 parts per million
• Bans all phenols in thermal paper, including label paper

California AB 1604 (Proposed):

• Would ban intentionally added BPA by January 1, 2027
• Would ban all intentionally added bisphenols by January 2028
• Passed committee votes 7-0 and 12-0

Other States: Connecticut, Illinois, and others have banned BPA in receipts; multiple states are proposing similar legislation.

European Union

The EU has imposed restrictions on BPA content in thermal paper. In December 2024, the European Commission adopted a ban on BPA and other hazardous bisphenols in food contact materials. While paper and cardboard are not directly included, printed or coated paper falls within scope when combined with regulated components.

Canada

Health Canada is shaping procurement decisions ahead of 2026 compliance deadlines.

The Recycling Problem

Thermal receipt paper poses significant recycling challenges:

• The chemical coatings contaminate recycling streams, affecting the quality of recycled paper products
• 93% of thermal receipts contain BPA—when recycled, these chemicals can transfer to products like napkins and toilet paper
• Most recycling centers do not accept thermal receipts
• Even "BPA-free" labels are insufficient, as BPS presents similar issues

This contamination means that receipts are not just a personal health concern—they are an environmental one as well.

The Solution: Phenol-Free Thermal Paper

The industry response has been the development of phenol-free thermal paper, which eliminates BPA, BPS, and all other phenolic compounds.

Key advantages of phenol-free paper:

• Same print quality as traditional thermal paper
• Compatible with existing POS systems—no hardware changes required
• Image stability comparable to traditional paper (up to 25 years)
• Regulatory compliance for current and future bans

Alternative color developers include Pergafast 201, vitamin C-based formulations, and Alpha-Naphthyl-Benzenesulfonamide (D-8) developer systems. A 2026 study showed that safer thermal paper formulations can be made directly from non-edible biomass, pointing toward even more sustainable solutions.

What This Means for Businesses

For businesses that use thermal paper—retailers, restaurants, banks, and logistics providers—the regulatory landscape is shifting rapidly.

Key considerations:

1. BPA-free is not enough—BPS poses similar risks and is increasingly regulated
2. Phenol-free is the new standard for compliance and safety
3. Transition now to avoid supply chain disruptions
4. Protect employees—cashiers and retail staff have the highest exposure

Casper Paper Industrial Co., Ltd. offers phenol-free thermal paper rolls that meet the strictest regulatory standards. With over 15 years of experience and ISO9001 & ISO14001 certification, we provide compliant solutions for the North American market.

Conclusion

The evidence is clear: traditional thermal receipt paper containing BPA or BPS poses health risks, particularly for those with chronic occupational exposure. The good news is that safer alternatives exist and are readily available.

Phenol-free thermal paper provides the same functionality without the endocrine-disrupting chemicals. As regulations from Washington State, California, the EU, and beyond continue to evolve, the question is no longer whether to switch—but when.

Businesses that transition to phenol-free paper now protect their employees, their customers, and their bottom line. Casper Paper Industrial Co., Ltd. is here to help make that transition seamless.