Sunscreen for hot, humid or logistically demanding markets needs a stability plan connected with realistic conditions.
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.
Map the conditions
Temperature, humidity, light, freezing, altitude, transport duration and local storage define scenarios prioritised by country and channel.
Critical attributes
Appearance, odour, colour, pH where relevant, viscosity, density, homogeneity, microbiology and packaging function need predefined criteria.
Stress and cycles
Thermal cycling and exploratory stress tests can reveal vulnerabilities but do not replace an appropriate shelf-life programme.
Protection relevance
Physical or chemical changes may affect film behaviour. Significant changes require assessment of the supporting SPF/UVA evidence.
Briefing checklist
- Countries and logistics
- Limit conditions
- Specifications
- Commercial packaging
- Sampling points
Frequently asked questions
Does accelerated stability guarantee shelf life?
Not automatically. It is one component of a broader assessment.
Should the carton be included?
The complete packaging system can matter for light and transport.
What if viscosity changes?
Compare it with specifications and assess effects on dose, use and film.
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.