Inquiry about Minimum Lutein 0.5% in Calendula Extract

Regarding your question about "minimum lutein 0.5%" in the Calendula extract:

• "Minimum Lutein 0.5%" means that the manufacturer guarantees that this specific Calendula extract product contains at least 0.5% Lutein.
• This does not necessarily mean it's the lowest amount among all Calendula extracts available or compared to other brands. In fact, the staff mentioned that many manufacturers do not disclose or guarantee the minimum level of Lutein at all. Having a guaranteed minimum of 0.5% is presented as a positive point for this product.
• Regarding whether 0.5% is a standard amount or if more is usually used in cosmetics: The staff indicated that Lutein starts to provide benefits for the skin at 50ppm (which is 0.005%). Therefore, 0.5% (which is 5000ppm) is a significantly higher concentration than the minimum beneficial level. While the staff didn't explicitly state if 0.5% is the industry standard, having a guaranteed level this high is highlighted as a reason for choosing this supplier.