It is very convincing. They say it does NOT grow hair. Does NOT change hair diameter. What else you need to know?
Actually, they don't say that. They say that there was a constant improvement and that 63.3% of the men in the study experienced an increase in hair number after 6 months compared to the baseline.
No significant differences were observed in men regarding the total number of hair at any control visits in comparison to baseline, yet men experienced a constant improvement. At the end of treatment (6 months), 63.3% of them had experienced an increase in total hair number and the percent change of total hair count after 6 months was +1.6% compared to baseline. A significant increase in anagen hair and a significant decrease in telogen hair were observed starting from 3 months (Table 1 and Supporting Information Figure S1), together with a significant increase in the pull test score.
And regarding the hair diameter in the table seems like there is an improvement from 0.0595 ± 0.0111 to 0.0651 ± 0.0181in a period of 6 months.