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The purpose of this study was to determine in vitro the sun protection factor (SPF) of somebody creams and lotion sunscreens formulations marketed in Kinshasa containing physical and/or chemical sunscreen by ultraviolet spectrophotometry. The calculated sun protection factor of ten different commercially available formulations of body creams and lotions founded in Kinshasa’s market were evaluated using Mansur equation. The labeled SPF values were in the range of 15 to 60. The outcome of the study indicated that out of the ten different marketed formulations, 40% sunscreen samples were in close agreement of their labeled claim SPF while 60% sunscreen samples had lower SPF values than labeled claim. The proposed spectrophotometric method is rapid, simple and cost effective for the in vitrodetermination of SPF values of body creams and lotions containing physical and/or chemical sunscreens.