Measured with UV-Visible spectrometer absorptivities of Preservative efficiency to methylparahydroxybenzoate of many preservatives used in the cosmetics and photosensitizing dyes much used as mosturizer of the skin.
And measured, as the same method, ...
Measured with UV-Visible spectrometer absorptivities of Preservative efficiency to methylparahydroxybenzoate of many preservatives used in the cosmetics and photosensitizing dyes much used as mosturizer of the skin.
And measured, as the same method, absorptivities of preservative efficiency when used methy1parahydroxybenzoate with photosensitizing dyes.
The results of the study on the characteristics of the follow;
1) There is a wide difference in the effect of prservatives according to a sort of the emulsifier used.
2) Preservative efficiency of photosensitizing dyes is more intelligent than it of methy1parahydroxybenzoate, being independent of a sort of the emulsifier used.
3) Preservative efficiency of photosensitizing dyes is not only itself intelligent but also much intelligent when used it with other's preservatives.