Sif Cosmetics has performed a pre-marketing survey on the efficacy of BIOEFFECT EGF Serum in which volunteers tested two different concentrations of the EGF Serum. The participants applied the serum each evening for one to four weeks.
98% agreed that they had noticed their skin had a fresher look, and the same percentage said that they would recommend the serum to friends. 76% of the participants who tried the serum with the higher concentration of EGF cellular activator agreed that using the serum had rejuvenated their skin.
The survey furthermore revealed that the participants were more satisfied with the serum that contained the higher concentration of the EGF cellular activators. On the basis of these results, a higher concentration of the EGF cellular activator was used in the final product that is for sales today.
The survey showed that usage of the serum has multiple positive effects on the skin. This particularly applied to the 30% of the participants that said they had very sensitive skin. The serum did very well, for example, on dry spots that disappeared in a couple of days by using the serum. Moreover, cases were reported where various more severe skin problems faded or disappeared entirely.
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