Comparison of UVA Protection Factor Measurement Protocols.
Kamand HedayatSaman Ahmad NasrollahiAlireza FiroozHossein RastegarManouchehr DadgarnejadPublished in: Clinical, cosmetic and investigational dermatology (2020)
Finally, this review discussed the comparison of all in vitro and in vivo UVA-PF measurement standards and provided information in the form of texts and tables to move towards the creation of an integrated standard. Since in vitro methods of UVA-PF measurement are not reproducible due to differences in test conditions, it may be concluded that the in vivo PPD method is a more suitable option.