How to Identify Genuine TPO Free Gel Nail Paint: A Nail Tech Checklist

Key Takeaways,

• This blog helps nail technicians and salon owners verify whether their gel nail paint is genuinely TPO free and compliant with current EU and UK regulations.

• It explains the latest TPO regulations, including the EU ban (effective September 2025) and the UK phase-out beginning in August 2026.

• The blog provides a practical checklist for identifying authentic TPO free gel nail paint by checking INCI lists, Safety Data Sheets (SDS), and supplier documentation.

• It highlights the importance of auditing existing gel products and obtaining compliance documents from all suppliers to ensure regulatory compliance.

In September 2025, the European Union banned the use of TPO in all cosmetic products, including gel nail polish. The UK is also introducing its own phased ban from August 2026. As a result, many international brands have reformulated their products to meet these updated safety standards.

These regulations do not currently apply in India. However, they highlight a growing global focus on safer nail products. As internationally compliant products become more accessible in India, nail technicians and salon owners have an opportunity to choose products that meet higher international safety standards instead of waiting for local regulations to change.

This is where awareness becomes important. Choosing HEMA & TPO free gel polish is not just about following regulations abroad—it's about offering clients safer products and staying aligned with the direction in which the global nail industry is moving. Brands like Calyx London, which offer internationally compliant formulations, make it easier for Indian professionals to adopt these higher standards.

You Cannot Tell by Looking at the Product

One of the biggest misconceptions is that you can identify a HEMA & TPO free gel polish by its appearance or performance. In reality, you cannot.

A HEMA & TPO free gel polish can look, feel, and perform just like a traditional gel polish. Its colour, consistency, texture, thickness, and curing performance do not reveal whether it contains these ingredients. The only reliable way to confirm a product's chemical composition is through laboratory testing.

For salons and nail technicians, the practical way to verify a product is to check the full INCI (International Nomenclature of Cosmetic Ingredients) list, review the Safety Data Sheet (SDS), and request supporting documentation from the manufacturer or supplier.

This guide explains how to verify those details step by step, so you can confidently choose products that genuinely meet international safety standards instead of relying only on marketing claims.

Also read,

• Trending Gel Nail Polish Designs Every Nail Technician Should Master in 2026

• https://calyxnails.in/blogs/tutorials/indian-wedding-nail-art-designs-for-every-function

• Best Nail Art Tools Kit for Beginners in India

What TPO Is and Why Ban Changes Your Responsibilities as a Nail Technician

TPO (Trimethylbenzoyl Diphenylphosphine Oxide) is an ingredient used in many UV and LED gel nail products. It helps the gel cure under UV or LED light by starting the curing process that turns liquid gel into a hard coating. TPO became popular because it cures quickly and reduces yellowing compared to older photoinitiators. 

The EU banned TPO after studies raised concerns about its safety. It was classified as a substance that may affect reproduction, which means it can no longer be used in cosmetic products under EU regulations.Under EU cosmetic rules, substances that may harm reproduction (called CMR Category 1B) cannot be used in cosmetic products.

For nail technicians in the EU, the rule is simple. From 1 September 2025, products containing TPO cannot be sold, supplied, used professionally, or passed on to anyone else, no matter when they were bought. In the UK, ban is phased: no new TPO products may be placed on market from 15 August 2026, and all stock must be cleared by 14 February 2027.

Why "TPO Free" on Label Is Not Enough

Many gel nail products now carry a "TPO Free" label. However, the label alone does not guarantee that the product is fully compliant.

Studies in countries such as the Netherlands, Germany, Finland, Sweden, and the USA have found that some gel nail products had incorrect or incomplete ingredient labels. One Dutch study also found that some products did not meet the EU's mandatory labelling requirements.

This problem is not limited to small brands. Some well-known brands have also updated their formulas at different times, which has sometimes led to outdated or incomplete ingredient lists on products.

Another warning sign is when a product uses unclear ingredient names such as "acrylic resin" or "gel base" instead of the official INCI ingredient names.

A "TPO Free" label is a good first step, but it should not be the only thing you rely on. To confirm that a product is truly compliant, you should check the full INCI ingredient list, compare it with the Safety Data Sheet (SDS), and review the supplier's documentation. The following sections explain how to do this.

Professional Checklist: How to Verify TPO Free Gel Nail Paint

Work through these steps for every gel nail paint product in your salon inventory, and apply the same process to every new product before it enters your workflow.

Step 1 Read Full INCI List and Locate Photoinitiator

Every cosmetic product sold in the EU and UK is legally required to carry a full INCI (International Nomenclature of Cosmetic Ingredients) ingredient list. In gel nail products, photoinitiator will appear in this list. INCI names to actively search for and reject are:

• Diphenyl(2,4,6 trimethylbenzoyl)phosphine oxide this is TPO under its formal INCI name

• Trimethylbenzoyl Diphenylphosphine Oxide an alternative rendering of same substance

• CAS 75980 60 8 chemical registry number for TPO, sometimes listed in SDS documents rather than on product labels

If you find any of these names in the INCI list of a product used in the EU, the product is not compliant after September 2025. Do not use it. If you are based in the UK, check the relevant phase in dates above.

A secondary concern: if a gel nail paint does not list any photoinitiator at all, that is also a warning sign. Genuine UV/LED curable gels require a photoinitiator to function. An INCI list with no photoinitiator may indicate undisclosed ingredients, incorrect labelling, or a product that is not a true UV/LED gel.

Step 2: Know Which Ingredients Replace TPO

A genuine TPO free gel nail paint still needs another ingredient to help the gel cure under a UV or LED lamp. So you should see a different curing ingredient listed on the INCI ingredient list.

Some of the most common alternatives used in professional gel nail products include:

• TPO L (Ethyl Trimethylbenzoyl Phenylphosphinate) – One of the most widely used alternatives to TPO. It is commonly found in professional gel nail products that have been updated to meet current EU requirements.

• BAPO (Bisacylphosphine Oxide) – Another commonly used photoinitiator that provides strong and reliable curing performance.

• Phenylbis(2,4,6 trimethylbenzoyl)phosphine oxide – another ingredient used in some professional gel products where it is allowed.

Finding one of these ingredients on the INCI list is a good sign that the product has been reformulated with an alternative curing ingredient. However, you should still review the full ingredient list, Safety Data Sheet (SDS), and supplier documentation before relying on any TPO free claim.

Note: EU cosmetic regulations continue to evolve. While future changes have been proposed, the current TPO ban remains in effect until any new rules are officially adopted.

Step 3 Request and Review Safety Data Sheet

A Safety Data Sheet (SDS) is not the same as a cosmetic safety assessment, and it does not substitute for INCI labelling compliance. However, for a nail technician verifying product content, an SDS is a very useful way to double-check the product information. Any reputable professional nail brand or supplier should be able to provide a current, product specific SDS on request.

When reviewing an SDS, check for consistency with on product INCI list. Check Section 3 of the SDS. It lists the ingredients that may be hazardous. If the SDS lists TPO (or its CAS number 75980-60-8) but the label says "TPO Free," contact the supplier immediately for an explanation.

Also check the SDS issue date. If a product is marketed as a reformulated TPO-free product, ensure the SDS reflects the current formulation and revision date. For a product claiming to be a reformulated TPO free gel nail paint should be treated with caution. Request an updated version that reflects current formulation.

Step 4 Request Formal Supplier Documentation

Marketing claims and branded packaging are not compliance evidence. Nail technicians purchasing professional gel nail paint from any supplier whether a direct brand, a distributor, or a wholesale platform should request following documentation before adding a product to their salon inventory:

• Full INCI ingredient list for specific product SKU not a generic brand level statement

• Current SDS aligned with reformulated product

• Written confirmation of TPO free status referencing specific formula, not just brand level communication

• CPSR (Cosmetic Product Safety Report) or evidence of CPNP notification for EU market products

• Third party testing documentation where available, particularly for brands sourced outside EU/UK

If a supplier cannot provide an up-to-date SDS or a product-specific INCI list, you should not trust their TPO free claim. That is a clear disqualifier for professional salon use.

Step 5 Identify Red Flags That Indicate Non Compliant or Unverified Products

Even after checking the documents, there are other warning signs that a product may not meet the rules. The following warning signs mean you should investigate further or avoid the product:

• No INCI list on product non compliant with EU and UK cosmetics labelling regulations regardless of TPO status

• INCI list uses non standard terminology such as "gel base", "UV polymer", or "photopolymer" instead of recognised INCI nomenclature

• SDS does not match on label INCI list a discrepancy between two documents suggests either undisclosed reformulation or incorrect labelling

• "TPO free" claim with no corresponding alternative photoinitiator declared a functioning gel nail paint requires a photoinitiator; absence of any declared alternative is implausible

• Supplier cannot or will not provide a current SDS on request

• If the product comes from a country where TPO is still allowed, ask the supplier for EU or UK compliance documents before using it.

• Where applicable regulations require professional-use labelling, its absence may indicate broader labelling or compliance issues its absence signals broader labelling non compliance

Step 6 Conduct a Salon Inventory Audit and Document Your Process

Compliance is not a one time event. Formulations change, products are reformulated, and new stock enters the salon. A documented audit process protects both technician and business.

1. Audit every current product against the INCI checklist in Step 1.

2. Separate products confirmed as TPO free from those awaiting verification or identified as non compliant.

3. Contact every supplier for current SDS documents and written TPO free confirmation per documentation list in Step 4.

4. Dispose of products in accordance with local waste disposal regulations do not continue to use them professionally in the EU.

5. When new stock arrives, spot check INCI list on each delivery against the last verified version. Reformulations can occur without prominent notification.

6. Keep a record of verified products, documentation received, and audit dates. This creates an auditable trail in the event of regulatory inspection.

TPO Free vs HEMA Free: Understanding Difference

These two claims are often mentioned together, but they refer to different ingredients and different safety concerns and carry different regulatory statuses.

TPO is now prohibited outright in EU cosmetics. HEMA (2-Hydroxyethyl Methacrylate) is an ingredient that can cause skin allergies in some people. HEMA remains legally permitted for use by trained technicians in the EU and UK, though it is restricted for consumer products above specified concentration thresholds. At the time of writing, HEMA remains permitted for professional use under the applicable regulatory framework. There are currently no plans to ban HEMA in professional nail products.

For nail technicians managing clients with prior gel reactions or sensitisation histories, stocking a HEMA free and TPO free gel nail paint offers the broadest level of occupational and client protection. Two claims address separate sensitisation risks and should be evaluated independently.

When a product claims to be both HEMA free and TPO free, the same verification process applies to both claims. Request INCI list and SDS, confirm absence of both HEMA and Diphenyl(2,4,6 trimethylbenzoyl)phosphine oxide, and verify that alternative monomer systems and photoinitators are present and compliant.

What Compliance Ready Gel Nail Paint Looks Like in Practice

A professional nail brand that has genuinely reformulated its gel nail paint for TPO compliance does not rely on packaging claims alone. Signs that a product and supplier meet the requirements include:

• Full INCI list printed on product or provided via a scannable code on outer packaging

• An identifiable compliant photoinitiator (TPOL or BAPO) present in INCI, confirming formula functions as a genuine UV/LED gel

• A current SDS that aligns with label, issued post reformulation and dated after regulatory timeline came into effect

• Transparent communication from brand on reformulation timelines, with product specific (not just brand level) compliance statements

• Consistent performance across colour range many reformulated professional products are designed to deliver curing performance and durability comparable to previous TPO-based formulations.

Calyx London gel nail paint is formulated to professional grade, with safe, high performance photoinitiator systems that allow nail technicians to work with confidence. For technicians looking to deepen their understanding of formulation safety and professional product selection, Calyx London Nail Academy provides education grounded in industry current standards.

Conclusion

The EU TPO ban means nail technicians now need to take a more active role in checking the products they use. Professionals in the EU must ensure their products meet current regulations, while those in the UK should prepare for the upcoming deadlines. A "TPO Free" label is only the starting point, it should always be supported by the correct documentation.

The checklist above helps nail technicians check their current products, review new ones, and set a clear standard when working with suppliers, evaluate new products, and establish a documentation standard with suppliers. Learning how to read an INCI list, compare it with the SDS, and ask suppliers for written proof should become a basic skill for every nail technician.

Stocking verified TPO free gel nail paint also communicates something clear to clients: that their technician is operating to the highest current professional standard. In a market where consumer awareness of ingredient safety has increased significantly since EU ban, that positioning has practical business value beyond regulatory compliance.