Glossary · Formulation
What Is SPF & UV Filters?
SPF, or sun protection factor, is a measure of how much a product delays sunburn relative to unprotected skin, determined by a standardized test. It is delivered by UV filters — organic or inorganic ingredients that absorb or scatter ultraviolet radiation — whose permitted list, concentration limits and labelling differ by market.
Why it matters when you source
Sunscreen is where formulation, testing and regulation are most tightly coupled: the filters available to you depend on the destination market, and the SPF claim depends on a test nobody can shortcut. Settle both before committing to a texture or an SPF number.
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- Sunscreen manufacturing & SPF testing →
- OTC monograph (US sunscreen) →
- Sun care manufacturing capabilities →
Related terms
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