A broad-spectrum sunscreen must provide balanced UVA and UVB performance under the rules of its destination market. SPF alone does not describe the whole profile.
Why this matters in a sunscreen project
A responsible brief aligns performance, user experience, manufacturing, packaging, documentation and market requirements. Commercial statements should only be finalised when the evidence matches the finished product.
UVA and UVB objectives
The two regions are considered separately in development and communication. The formula must provide suitable coverage within a continuous film.
SPF, UVA metrics and critical wavelength
Applicable metrics differ by market. They should be agreed before formulation so the filter system and claims follow the right route.
Film uniformity
Rheology, spreading, setting and resistance affect distribution. Strong theoretical absorbance is not enough if the film is irregular.
Commercial formula testing
The marketed formula is the relevant test article. Later changes require documented impact assessment.
Briefing checklist
- Destination countries
- SPF category
- UVA criterion
- Format and dose
- Resistance and test protocol
Frequently asked questions
Does SPF 50 guarantee high UVA protection?
Not by itself. UVA performance must be assessed separately.
Is broad spectrum identical worldwide?
No. Terminology, methods and conditions vary.
Can a lightweight sunscreen still protect well?
Yes, provided film performance and final validation are maintained.
Development and manufacturing with OKT GLOBAL
OKT GLOBAL integrates R&D, quality, regulatory support, packaging, scale-up and manufacturing in Spain under UNE-EN ISO 22716 certified by Bureau Veritas.