This informal CPD article ‘UV Filters in Cosmetics: SCCS Opinions and Annex VI Requirements’, was provided by Pharmalliance Consulting, who offer specialist support to pharmaceutical companies to maintain and increase quality compliance levels.
Sunscreen and sun-protective formulations depend entirely on UV filters, ingredients specifically permitted for this function under Annex VI of Regulation (EC) No 1223/2009, which lists every substance authorised as a UV filter in the EU along with its permitted concentration and any conditions of use (1). Like the preservatives list, Annex VI operates as a positive list: only substances explicitly included may be used to provide UV protection, and the list itself is revised with some regularity as new safety data emerges.
UV filters attract a particular intensity of regulatory and scientific attention, driven by a combination of high usage concentrations, environmental persistence questions and genuine scientific debate around systemic absorption. Anyone formulating or reformulating sun care products needs to track this closely.
Why UV Filters Face Unusually Close Scrutiny
UV filters are typically used at higher concentrations than most other functional cosmetic ingredients, applied liberally and often reapplied multiple times across a day, and used across broad areas of skin, including by children and during pregnancy. This combination of high exposure and vulnerable populations means the safety margin scrutiny applied to UV filters is correspondingly more demanding than for most cosmetic ingredient categories.
Staying current with this evolving evidence base protects manufacturers in concrete ways:
- Continued market access for sun care ranges: A formulation relying on a UV filter whose permitted concentration or conditions of use change can face reformulation deadlines with real commercial consequences given sun care's seasonal sales patterns.
- Genuine consumer safety assurance: Given how heavily and repeatedly these products are applied, staying ahead of emerging safety data is a substantive protection, not just a compliance formality.
- Credible sustainability positioning: Environmental persistence data increasingly informs both regulatory decisions and consumer purchasing choices, making this an area where regulatory and reputational considerations increasingly overlap.
How SCCS Opinions Shape the Permitted List
As with preservatives, changes to Annex VI typically follow a pattern of emerging concern, formal SCCS evaluation, and Commission implementation of the resulting recommendation. Titanium dioxide illustrates this well: the SCCS has issued multiple opinions addressing its use as a nanomaterial UV filter, examining questions specific to nanoscale particles, including dermal penetration and, for spray applications, inhalation exposure, with conditions of use refined as the evidence base has developed (2). This kind of substance-specific, evolving scrutiny is typical of how the UV filter list is actively managed rather than fixed.
Systemic absorption studies have also driven broader debate around several established UV filters, prompting the SCCS to request additional data from industry and, in some cases, revise its risk assessments to reflect updated exposure modelling once that data became available.
What Formulators Need to Track
A handful of considerations sit at the centre of practical UV filter compliance:
- Concentration limits and product-type restrictions: Several UV filters carry different permitted concentrations depending on product format, and some carry specific restrictions for spray or aerosol applications given inhalation exposure considerations.
- Nanomaterial-specific conditions: Where a UV filter is used in nanoform, it is subject to the more detailed characterisation and conditions of use that accompany nanomaterial status, separate from its non-nano equivalent.
- Combined UV filter systems: Products combining multiple UV filters to achieve broad-spectrum protection need each individual filter's concentration and conditions checked, not just the combined SPF performance outcome.
- Regional divergence from other markets: The EU's permitted UV filter list differs meaningfully from other major markets, including the United States, which complicates global formulation strategies for brands operating across regions.
Where Sun Care Formulation Commonly Runs Into Difficulty
A few recurring issues show up repeatedly in sun care product development:
- Reformulation lead time underestimated: SPF testing and stability work take considerable time, and a late-stage forced reformulation following an Annex VI change can jeopardise an entire seasonal launch window.
- Efficacy retesting after substitution: Replacing one UV filter with another to address a regulatory change still requires full SPF and broad-spectrum efficacy retesting, not just an assumption of equivalent performance.
- Global formulation fragmentation: Maintaining separate formulations for different regions due to divergent permitted filter lists, adding complexity to global supply chains.
Building a Resilient Sun Care Compliance Strategy
A few consistent practices help companies stay ahead of this particularly dynamic regulatory area:
- Monitor SCCS opinions and Annex VI amendments as a dedicated, standing regulatory intelligence activity given the pace of change in this category.
- Build reformulation contingency time into sun care development timelines, recognising the seasonal commercial stakes involved.
- Track nanomaterial-specific conditions separately from a UV filter's general conditions of use, since the two can diverge significantly.
- Engage with regional regulatory differences early when developing formulations intended for multiple global markets.
Protection That Depends on Getting the Details Right
UV filters exist to provide a genuine health benefit, and the intensity of scrutiny applied to them reflects both their high usage patterns and their genuine importance in skin cancer prevention. Formulators who treat Annex VI as an actively evolving framework, tracked continuously rather than checked once, are best positioned to keep sun care products both compliant and genuinely protective.
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References
(1) European Commission, 2009. Regulation (EC) No 1223/2009 of the European Parliament and of the Council on cosmetic products, Annex VI (List of UV Filters Allowed in Cosmetic Products), Brussels, Belgium.
(2) Scientific Committee on Consumer Safety, 2021. Opinion on Titanium Dioxide (nano form) as a UV-Filter in Sprays (SCCS/1617/20), Brussels, Belgium.
