I bought Twinlab primrose after the pharmacist recommended it to me for my problems with the seborrhea. I didn't see a big improvement on my skin, apart the fact that it looked a bit healthier. However, I noticed a big improvement during PMS, I had almost no symptoms of it. The cramping during my period also decreased. So, it's not that helpfull for seborrhea, but it does help a lot for PMS.