i've used both. the regular one is good if u don't wear a lot of makeup. it will take time for your skin to adjust to it and you'll prob think that it doesnt feel clean enough - but use it for awhile and you will notice benefits eventually.
if u do wear makeup, use the one for oily skin. i use regular in the morning, the other in the evening.
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Just my opinion. I like the normal to oily better. My derm gave me a sample of the reg. but the other works better for me. It cleans without overdrying your skin like other washes can.