EGF Concentration: Percentage vs. PPM

Thank you for your question regarding EGF concentration. It seems there might be a misunderstanding in converting percentage (%) to parts per million (ppm).

Here's the clarification:

• Percentage (%) means parts per hundred.
• Parts per Million (ppm) means parts per million.

To convert percentage to ppm, you multiply the percentage by 10,000.

So, 1% = 10,000 ppm.

Therefore, if you use the Epidermal Growth Factor (EGF, Recombinant) product at a concentration of 3% in your formula, the concentration of EGF in ppm would be:

3% * 10,000 ppm/% = 30,000 ppm

This means that using EGF at 3% results in a concentration of 30,000 ppm, which is significantly higher than the 1 ppm and 5 ppm concentrations mentioned in the research you referred to. The product description for Epidermal Growth Factor (EGF, Recombinant) also mentions that research showed increased skin barrier components when used at 1 ppm and 5 ppm, and the recommended usage rate for general anti-aging formulas is 3%.

In summary, 3% EGF is equivalent to 30,000 ppm, not 3 ppm.