Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Grainy texture, no help for acne

In general, I've done very well with sulfur products in fighting my long-standing cystic acne. However, I found this MSM cream grainy, unpleasant and it had no affect either on dryness or my acne. Also, It's not suitable to wear under make-up. I understand it's worked for some people, but it didn't work for me.