God this is an awful product for sensitive skin. One of the worst things you can do to your acne is scrubbing a harsh physical exfoliator on it. I have sensitive rosacea prone skin and at the time when I used this product I didn't knew. This product has triggered a lot of redness and caused major irritation for me. I believe the salt combined with the large amounts of tea tree essential oils was an overkill.
If after all you still insist on using this product, avoid using it on the face and sensitive body areas and use it as a body scrub instead.