I have sometimes been lucky enough to receive a PR sample in exchange for my honest review. Whether or not I have purchased something has no bearing on the integrity of my review. I have indeed posted less than glowing reviews of products I have received free of charge. (In these cases, I specify why the product didn’t work for me and also who it might better suit, in regards to skin type, preferences, etc.)
Making a purchase via one of my affiliate links allows me to earn a small commission (at no additional cost to you.)
If you aren’t cool with this, for whatever reason, simply open the site independently and your purchase(s) will earn me nothing.