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TABLE OF CONTENT
 
Basic Elements of Sunscreens 
Chemical (Organic) Sunscreens 
Physical (Inorganic) Sunscreens 
Evolution of Sunscreen Formulations 
Optimal Sunscreen Performance 
Determining SPF through Formal Testing 
Laboratory Testing Requirements 
Importance of Laboratory Testing 
Skin Types in SPF Testing 
Legal Requirements for Sunscreens 
Comprehensive Testing and Regulation 
Summary 
Mixing Sunscreens: Key Considerations for Formulation 
Compatibility and Stability of Raw Materials 
Formulation Techniques 
Water Resistance and Film Formation 
Practical Considerations