Sunscreen SPF and UVA requirements vary by market. While sunscreens are regulated as cosmetics in the European Union and United Kingdom, they fall under the over-the-counter (OTC) drug framework in the United States. This distinction affects permitted UV filters, efficacy testing and product labelling.
For manufacturers and brands planning international launches, a high SPF result is only one part of compliance. Product classification, UVA protection, testing methods and label claims must be assessed together.
What Is the Difference Between SPF and UVA Protection?
Sun protection factor (SPF) measures protection against sunburn and primarily reflects UVB protection. It does not independently establish a sunscreen’s UVA protection factor, or UVA-PF.
The European Commission’s sunscreen recommendation uses 290–320 nm for UVB and 320–400 nm for UVA. Describing UVA as ending at 380 nm therefore leaves out part of the relevant spectrum. Commission Recommendation 2006/647/EC
A product labelled SPF 30 does not automatically provide a UVA-PF of 30. Both claims require suitable supporting evidence.
How Are Sunscreens Regulated in Each Market?
| Market | Classification | Main framework |
| European Union | Cosmetic products | Regulation (EC) No 1223/2009 |
| Great Britain: England, Scotland and Wales | Cosmetic products | Regulation (EC) No 1223/2009 as applicable and amended in GB; SI 2013/1478 provides enforcement provisions |
| Northern Ireland | Cosmetic products | EU cosmetics rules applicable under the Windsor Framework |
| United States | OTC drug | Federal drug law, OTC Monograph M020 and relevant FDA provisions |
Businesses should distinguish Great Britain from Northern Ireland when assessing responsible person arrangements, notifications and ingredient compliance. SI 2013/1478 should not be presented as the complete substantive cosmetics framework. GOV.UK: Great Britain guidance, GOV.UK: Northern Ireland guidance
EU Sunscreen SPF Testing and UVA Criteria
EU cosmetics legislation governs product safety and claims. Commission Recommendation 2006/647/EC provides an additional reference for sunscreen efficacy and labelling. Its recommended criteria should be distinguished from binding legal obligations.
SPF and UVA Test Methods
ISO 24444 is widely used for in vivo SPF determination. ISO 24442 and ISO 24443 address in vivo and in vitro UVA assessment, respectively. Method selection should reflect the formulation and intended claims.
The Commission recommends UVA protection of at least one-third of SPF and a critical wavelength of at least 370 nm. For SPF 30, the one-third approach corresponds to a UVA-PF of at least 10. Critical wavelength addresses spectral breadth; it is not interchangeable with UVA-PF. Commission Recommendation
The UVA circle communicates the one-third protection approach. A critical wavelength result alone should not be treated as sufficient justification for using the symbol. CTPA: The science behind sunscreens
Recommended EU SPF Labelling Categories
| Protection category | Measured SPF | Labelled SPF |
| Low | 6-9.9 | 6 |
| Low | 10-14.9 | 10 |
| Medium | 15-19.9 | 15 |
| Medium | 20-24.9 | 20 |
| Medium | 25-29.9 | 25 |
| High | 30-49.9 | 30 |
| High | 50-59.9 | 50 |
| Very high | ≥60 | 50+ |
These recommended categories provide a consistent way to communicate protection levels. Commission Recommendation
Newer Methods: ISO 23675 and ISO 23698
ISO 23675:2024 addresses in vitro SPF determination for emulsions and alcoholic single-phase formulations. Powders and sticks are outside its scope, and it does not determine water resistance. ISO 23675:2024
ISO 23698:2024 uses diffuse reflectance spectroscopy to assess SPF, UVA-PF and critical wavelength. It involves measurements on human skin and should not be described as an entirely volunteer-free in vitro method. ISO 23698:2024
Publication of an ISO standard does not automatically establish acceptance in every jurisdiction. Brands should confirm both method scope and market expectations before commissioning studies.
UK Sunscreen Requirements and UVA Labelling
UK sunscreen labels may display SPF, the UVA circle and the Boots Star Rating. The Boots system is a commercial approach to communicating the balance between UVA and UVB protection, rather than a mandatory mark for every sunscreen. Stars should not be interpreted as an absolute UVA-PF value independent of SPF. CTPA: The science behind sunscreens
Great Britain’s 4-MBC Transition Dates
Cosmetics containing 4-Methylbenzylidene Camphor (4-MBC) cannot be newly placed on the Great Britain market from 15 July 2026. Products placed on the market before that date may continue to be made available until the end of 14 January 2027. Distinguishing initial placement from continued supply is therefore essential. SI 2026/23
This illustrates why ingredient checks must consider the destination market and applicable transition periods, rather than a simple permitted-or-banned list.
US FDA Sunscreen Requirements
US sunscreens are regulated as OTC drugs. Products marketed through the monograph pathway must comply with the current M020 conditions for active ingredients and their use. EU formula compliance does not establish US eligibility.
What Does Broad Spectrum Mean?
The FDA Broad Spectrum test evaluates coverage across UVA and UVB and uses a critical wavelength threshold of at least 370 nm. It does not use the EU-style one-third UVA-PF/SPF criterion. An EU test report should therefore not automatically be treated as evidence of FDA test compliance. FDA: Labelling and effectiveness testing
2026 Update: Bemotrizinol
In June 2026, FDA added bemotrizinol to M020 at concentrations up to 6%, subject to specified conditions. Brands should therefore assess the current monograph rather than rely on older US sunscreen ingredient lists. Federal Register: M020 amendment
EU, UK and US Sunscreen Requirements Compared
| Topic | EU | UK | US |
| Classification | Cosmetic | Cosmetic; distinguish GB and NI | OTC drug |
| SPF assessment | Suitable efficacy evidence; ISO methods widely used | Similar testing practices; confirm market needs | FDA test provisions |
| UVA approach | One-third and ≥370 nm recommendation | UVA circle; optional commercial star system | Broad Spectrum test; ≥370 nm |
| UV Filters | EU positive list and conditions | Applicable GB or NI rules | Current FDA monograph conditions |
| Labelling strategy | Cosmetic claims and protection categories | Regional rules and claim evidence | OTC drug labelling requirements |
Sunscreen Compliance Checklist for International Brands
Planning the following steps during product development can help reduce additional testing, reformulation and packaging changes:
- Define target markets, including whether UK sales cover GB, NI or both.
- Check UV filter permissions, concentrations and transition dates.
- Define SPF, UVA and any water-resistance claims separately.
- Confirm test suitability for the formulation and destination market.
- Match packaging, website and advertising claims to supporting results.
- Complete applicable documentation, responsible person, notification or drug compliance obligations.
Contact Obelis to discuss the compliance pathway for your sunscreen in its target markets.
Frequently Asked Questions
Does SPF measure UVA protection?
No. SPF primarily measures protection against sunburn. UVA protection requires a separate assessment using appropriate methods.
Can the same sunscreen be sold in the EU and US?
Potentially, provided its formulation, testing and labelling satisfy both frameworks. EU cosmetics compliance does not replace US OTC drug compliance.
Is ISO 23675 suitable for every sunscreen?
No. Its scope excludes powders and sticks, and it does not assess water resistance. The laboratory should confirm suitability before testing. ISO 23675:2024
Is the Boots Star Rating equivalent to FDA Broad Spectrum testing?
No. They use different methods and evaluation criteria. Meeting one system does not automatically establish compliance with the other.