Retinol serum

I have been using this in combo w/ SkinBio's supercop serum for 4 wks. I do have acne prone skin, with cystic acne being my main issue. The squalene base of this is oily, but not in a super heavy...

GREAT product idea. This is a highly effective product. I really like it. It lightens dark spots. It doesn't irritate my skin. It really doesn't dry out my skin like other retinols and I find the...