Optimal Excellent retinol serum. Follow the directions. The only flaw is the dropper. It's a bit difficult to get a hold of because it's thick, and the nozzle at the end, in my opinion, doesn't helpRead more
Optimal Excellent retinol serum. Follow the directions. The only flaw is the dropper. It's a bit difficult to get a hold of because it's thick, and the nozzle at the end, in my opinion, doesn't helpRead more