Can leave skin feeling a bit greasy that lasts throughout the day, which isn't great for oily skin. After 5 weeks of twice daily use I never noticed any improvements in blemishes; I developed new acne/whiteheads while using this serum and they either took just as long to fade or never actually healed (this normal for me so I don't believe it was a reaction to the serum). Also, this serum has a very strong earthy smell that's actually quite offensive when you first use it (doesn't linger after application, though); eventually you get used to it but it may not be for everyone.
*The photos attached to this review were automatically cropped by the Picky app. My original photos show the entire product.