BYBI Beauty - IQ review for Bakuchiol Booster

I went and brought this to try as it's a small little bottle of booster. I was told this is safe to use as not all retinol are safe for skin of colour. You only add few drops in your current Moisturiser. It seems reasonable thing to do as there was so much hype. I have not noticed any Difference after using it for few weeks. Zilch absolutely nothing. Thank god I brought only the 15 ml booster. Even the 15 ml is £12 in UK which is handsome price for small bottle. Not impressed. But the trial continues...