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
Very goodI use this serum for my evening skincare routine. The serum has an incredibly light, non-sticky consistency and absorbs quickly into the skin.
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
Very goodI use this serum for my evening skincare routine. The serum has an incredibly light, non-sticky consistency and absorbs quickly into the skin.
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