DETERMINATION OF SUN PROTECTION FACTOR OF SUNSCREENS BY TWO DIFFERENT IN-VITRO METHODS

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GHARAVI SEYED MANOUCHEHR; TAVAKOLI N.; PARDAKHTI A.; BAGHAIZADEH N.

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Journal: JOURNAL OF RESEARCH IN MEDICAL SCIENCES (JRMS) Year:2000 | Volume:5 | Issue:Supplement 2 Page(s): 48-53

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Information Journal Paper

Title

DETERMINATION OF SUN PROTECTION FACTOR OF SUNSCREENS BY TWO DIFFERENT IN-VITRO METHODS

Author(s)

GHARAVI SEYED MANOUCHEHR | TAVAKOLI N. | PARDAKHTI A. | BAGHAIZADEH N. | Issue Writer Certificate

Keywords

SUNSCREENQ4

SUN PROTECTION FACTORQ4

Abstract

Background. SUNSCREENs usually protect the skin against harmful effects of sunlight. These products contain two effective physical and chemical components, which protects the skin from sunlight. SUN PROTECTION FACTOR (S.P.F) is a critical factor indicating the effect of SUNSCREEN against sunlight.Methods. To measure S.P.F of SUNSCREENs, various in-vivo and in-vitro methods have been established. In this study, two in-vitro methods were used. In 'Transpore tape' method, SUNSCREEN product was dispersed uniformly on the substrate to obtain a surface coverage of 2mg/cm2 of the product. Transmittance measured spectrophotometerically, and then S.P.F was calculated. In the second method (solvent method) different concentrations of test products were prepared in methanol. The sample's transmittance were measured to evaluate S.P.F.Results. Results of the first method indicated a good linear relationship between measured S.P.F and the labled S.P.F (r=0.97). Results of the second method indicated that relatively a good relationship exisit between log of measured S.P.F and labled S.P.F (r=0.88).Discussion. The transport tape method is fairly simple, feasible and importantly the surface of the tape is similar to that of the skin. Although, transport method is not time consuming, it is less accurate than in-vivo methods.

Cites

AN EVALUATION OF (SUN POTECTION FACTOR) SPF ACCURACY OF SOME SUNSCREENS

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APA: Copy

GHARAVI, SEYED MANOUCHEHR, TAVAKOLI, N., PARDAKHTI, A., & BAGHAIZADEH, N.. (2000). DETERMINATION OF SUN PROTECTION FACTOR OF SUNSCREENS BY TWO DIFFERENT IN-VITRO METHODS. JOURNAL OF RESEARCH IN MEDICAL SCIENCES (JRMS), 5(Supplement 2), 48-53. SID. https://sid.ir/paper/26740/en

Vancouver: Copy

GHARAVI SEYED MANOUCHEHR, TAVAKOLI N., PARDAKHTI A., BAGHAIZADEH N.. DETERMINATION OF SUN PROTECTION FACTOR OF SUNSCREENS BY TWO DIFFERENT IN-VITRO METHODS. JOURNAL OF RESEARCH IN MEDICAL SCIENCES (JRMS)[Internet]. 2000;5(Supplement 2):48-53. Available from: https://sid.ir/paper/26740/en

IEEE: Copy

SEYED MANOUCHEHR GHARAVI, N. TAVAKOLI, A. PARDAKHTI, and N. BAGHAIZADEH, “DETERMINATION OF SUN PROTECTION FACTOR OF SUNSCREENS BY TWO DIFFERENT IN-VITRO METHODS,” JOURNAL OF RESEARCH IN MEDICAL SCIENCES (JRMS), vol. 5, no. Supplement 2, pp. 48–53, 2000, [Online]. Available: https://sid.ir/paper/26740/en

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