Fig. 1From: New methods for assessing secondary performance attributes of sunscreens suitable for professional outdoor workStability of the SPF after physical activity. Legend: The blue bars show the initial SPF according to ISO 24444, the orange ones show the bio-stability of the SPF after twice-induced sweating by physical activity on a gym stepper for 40 min. The arrows represent the decrease in percentage on the SPF. For all products, producers had claimed full bio-stability after sweatingBack to article page