Turmeric is anti-oxidant anti-inflammatory and beneficial to acne prone skin.Be warned though that turmeric will stain anything it touches so make the mixture thick,wrap a towel around your shoulders and be careful of drips.Turmeric may also stain fair skin and hair,though it will be subtle (you won't turn bright yellow,though your fingernails might-wash your hands thoroughly!)the longer it's left on the more likely it is to stain,so start out with only 5-10 minutes.I have light skin and I don't notice any change to my skin unless I leave it on for at least an hour,or I have aggressively exfoliated my skin beforehand.In my opinion the strong anti-inflammatory properties of this mask far outway any slight yellowing ,which is not very noticeable and some people use this intentionally to cover up some of the redness and blotchiness from acne.