[COSRX] The Retinol 0.5 Oil (20ml/0.67fl.oz)

A retinol that doesn't irritate my skin!

I haven't been using this product long enough to know how effective it is, but I am very pleased that unlike another retinol product that I tried, it doesn't irritate my skin. I know this is partly due to the low concentration of active ingredient (0.5%) but I think it's also because it's in an oil base that contains skin soothing ingredients. It does need to be kept in the fridge, but for me that's worth it to have a retinol that doesn't irritate my sensitive skin.