Product SKU Sales (Units) Total Units Per SKU
Shampoo 123456 500
Conditioner 123455 1200
Shampoo Fine 123440 1205
Shampoo Curly 123440 600
Conditioner Fine 123440 1701
Conditioner Curly 123440 1923

I am trying to sum up the totals of rows if the SKU columns match.

Row 2 should read 500,
Row 3 should read 1,200
Row 7 should read 5,429.

I tried "Countif" but I would need to use each SKU in quotations and I have hundreds to go through. I have been staring at this for a while now and my brain has become mush. Perhaps there is an easier way to do this? Thank you for your help!